 something:
Avoid comparing yourself with others
Comparisons are not safe, whether you compare how you look to your friends on social media or compare your paycheck with your friend’s income. A Personality and Individual Differences study published in 2018 found a direct correlation between envy and the way you feel about yourself.
Researchers discovered that envy was experienced by individuals who compared themselves to others. And the more jealousy they felt, the worse they felt for themselves. It can be a loop of viciousness.
Pay attention to occasions when your wealth, possessions, talents, accomplishments, and qualities are compared. It will erode your faith in yourself to believe that other individuals are better or have more. Remind yourself that doing so is not beneficial when you find you are making comparisons. Everyone runs a race of their own, and life isn’t a contest.
Take proper care of your body
It can be nearly impossible to feel good about yourself if you misuse your body. It will take a toll on your mental health when you skimp on sleep, consume an unhealthy diet, and avoid exercise. Studies consistently demonstrate that physical activity increases confidence.
Research published in Neuropsychiatric Disorder and Treatment in 2016 showed that daily physical exercise increased the body image of participants. And they felt more positive when their body image changed. Make self-care a necessity. You will automatically feel more confident in yourself when you physically feel at your best.
Practice self-compassion
When you make a mistake, lose, or suffer a loss, self-compassion means treating yourself with kindness. Talking badly about yourself won’t inspire you to do better. Studies actually show that it appears to have the opposite effect.
A study published in the Journal of Personality in 2009 found that self-compassion leads to more consistent trust. Talk to yourself as if you are talking to a trusted friend, rather than beating yourself up or calling yourself names. Cut yourself a little bit of slack, laugh at yourself, and know that nobody is flawless.
Embrace self-doubt to build self-confidence
Occasionally, individuals put off doing stuff until they feel more secure, including asking someone on a date or requesting for a promotion. However, the best way to gain trust is by doing so. If you’re scared that you’re going to embarrass yourself or you think that you’re going to mess up, try it anyway—practice facing some of your fears that originated from a lack of self-confidence.
That does not mean that you shouldn’t study or practice. Train yourself in front of your friends and family if you have a big presentation coming up so that you get some confidence. But before you start, don’t hesitate until you are 100 per cent secure.
Accepting a little self-doubt could help you perform better. A 2010 research published in Sport and Exercise Psychology found that athletes who accepted their self-doubt outperformed athletes who had 100% self-confidence.
Conduct behavioural experiments
Remind yourself that your thoughts aren’t always accurate when your mind tells you that you have no reason speaking up in a meeting or that you are too out of form to work out. Often, the best way of dealing with negative self-talk is by questioning such assertions.
Try and do stuff your brain tells you you can’t do. Convince yourself that it’s just an experiment to see what’s going to happen. You could discover that it’s not as bad as you thought to be a little nervous or to make a few mistakes. By doing this, you will build self-confidence.
Everybody struggles at one period or another with trust problems. However, if your struggles with self-confidence conflict with your job, social life, or education, get professional assistance.
Low self-confidence often stems from a larger problem, like a traumatic experience from the past. It may be a sign of a mental health issue at other times.It is also possible to be overly confident. You may not take action if you’re too confident in your abilities.
You will not be able to study if you are overconfident in your ability to take an exam or it might render you unprepared to believe that you don’t really have to practice your speech. Having a healthy amount of self-confidence that lets you operate at your best is crucial.If I close my eyes, I can almost see them … the rows and rows of bedraggled roller skates lined up in their little wooden cubbies. I can recall the pungent smell of thousands and thousands of sweaty feet. The faint aroma of buttered popcorn. And most of all, I can hear the sounds … hundreds of school-age kids using outdoor voices, muﬄed by the ever present rinky-dink organ music. It’s 1972 at Gay Blades Roller Rink, and I’m at a school skating party.
As a student at St. Petersburg’s Canterbury School from fifth through eighth grade, a skating party at Gay Blades was one of the highlights of the school year. As I recall, we all made fun of the name (LGBTQ awareness was not exactly on our radar).
I’d ride one of the mini buses Canterbury employed and arrive with my classmates, tickets in hand, eager to rush in, get our skates on and start whirling around the smooth, shiny rink. I had learned to skate on those ancient metal skates that clipped on to your shoes and required a key (shout out to Melanie’s iconic song) in my friend Pam’s driveway. So I was prepared to hit the rink in the Gay Blades-issued skates, and to actually see them as an upgrade. Sure, they were ridiculously heavy and scuﬀed up and smelly, but when I put them on, I felt so powerful, so free, so cool.
Unfortunately, I was decidedly not cool. I was a nerd before it was cool to be one. I got straight As, and to make matters worse, I was a skinny redhead with glasses, braces and zits. I wasn’t known for my athletic prowess at school (kickball, volleyball, dodgeball, pretty much anything involving a ball was not my forte) but I could hold my own on the rink.
The majority of time at the skating parties was considered “free skate” when nerds, cool kids, teachers and parents could all be out there together.  I seem to recall that we all skated in the same direction … right to left. It was always a challenge to go around the corners without mowing someone else down.
The soundtrack to our skating parties featured the hot hits of the day, everything from Donny Osmond’s “Go Away Little Girl” to Tony Orlando and Dawn’s “Tie a Yellow Ribbon” to Chuck Berry’s “My Ding-a -Ling.” That was about as risqué as it got. The DJ would occasionally break in and announce it was “race time,” and thankfully the races were divided up by boys and girls, and by age group. I always raced, and usually ended up in the middle of the pack, which was fine with me. 
Another highlight of the parties was the games. We played “red light, green light” and we all joyfully did the Hokey Pokey. There’s something so unifying about a bunch of people in roller skates, putting their arms and legs in and out and shaking all about. Maybe we should try it at the next United Nations meeting.
By far the worst part of the skating party was the dreaded “Couples Skate.” Of course you didn’t dare skate with a same-sex friend, so I ended up sitting on a bench, trying to look alluring and failing spectacularly. I’d watch all the other couples gliding by, wondering when my eight-wheeled prince would finally come.
Thinking about those Gay Blades Days is bittersweet. It truly was a more innocent time for kids, and for the world in general. I’m just grateful I have the memories.
Even if Bobby Jenkins never once asked me to skate.
Scalable solar image Retrieval with Lucene

In this work we present an alternative approach for large-scale retrieval of solar images using the highly-scalable retrieval engine Lucene. While Lucene is widely popular among text- based search engines, significant adjustments need to be made to take advantage of its fast indexing mechanism and highly-scalable architecture to enable search on image repositories. In this work we describe a novel way of representing image feature vectors in order to enable Lucene to perform search and retrieval of similar images. We compare our proposed method with other popular alternatives and provide commentary of the performance as well as the benefits and caveats of the proposed method.Couldn't you convert MTGO card into physical card back in the days? so you could still get the product out of the game.

Furthermore, it seems to me that MTGO had a way bigger success with people who already played magic than with new players (while Arena, with it's F2P model, attract more new player). Those people already knew what they were going into, so they knew that, despite teh greed buissness model, it was still "worth it". 

But for artifact, it's based on a brand new license. People don't get to experience it a bit, and then get completely sucked in, they have to go all in and invest a lot rigth from the begginnnig (paying a ful price game for a deck might be OK with real product, but not for a digital card game). So only the whales, or the people who are especially passionned of