The only chance you have within a small time frame to do something amazing in this world.
The earth is 4.543 billion years old with life beginning from a mineral pool of water. Time is what has brought us here to now reading this. (Now go watch David Attenborough)
Life is a complicated and diverse time of experiences and people. In life, you can choose to spend your time doing whatever you wish to make it so you except the vast infinity of the very concept of reality. In my own personal belief, life is an experience. So, you have it make sure it's a good experience. There are multiple other ways to deal with all the strange, unsolvable questions of reality, likereligion, a teaching, a moral code, or something else. In short, live they way you want to live, as long as it makes you happy. Unless that lifestyle somehow hurts other people, then stop and try to better yourself, please.
Life is a game that all humans are tapped in. It all come to an end one day. It can be a series of disappointments. But you have to live it to the fullest. So, when your about to give up on life, don't forget that there might be someone going through worse pain. Your amazing just the way you are.