I'm glad you are asking yourself these questions. You are correct in feeling like these "worldly" things we strive for (good job, money, education, etc). are all insignificant in the big picture. They are important for our lives but unless you know the basic truth
about life....it doesn't really matter right?
I personally discovered the truth of life in Christianity and Jesus Christ. I encourage you to ask Jesus to lead your heart to learn more about Him and God. Jesus is the meaning of life. And then you will understand why we are here and what your personal purpose really is.