What gives meaning to your life boils down to the choices you make in life. Religion/Philosophy/Worldview/Culture gives the foundation to make those choices. So, its critical to build that foundation. Whatever Religion you choose, it has to make sense to you and it should be something that you hopefully won't regret later in life. (I humbly propose a religion for your consideration.)
What gives pleasure to you boils down to how much fun and peace you are having in life. Pleasure within boundaries of Meaning is obviously more meaningful than pleasure without meaning. Mindful engagement in indulged activity, Flow experiences and Deep Sleep are avenues to experience pleasure.
Prescription for a Great Life:
1. Do some serious thinking/exploring and settle down on a religion/worldview that will serve you well throughout your life. It should primarily serve as a guide when you are at crossroads.
2. Make very intentional, conscious choices in life guided by your Religion.
3. Execute those choices mindfully and if possible by having flow experiences.