Whats the biggest obstacle in your life so far?

I don't really know whats my biggest problem in life. And I don't want to name them. I think the obstacle in my life is what I found out yesterday. I ain't eligible for basketball, I am sportless:P. Embarrissing to say but true. haha. but fkk it. I ain't paying attention to my past, just looking forward to the future:D. What I want to do, what I want to become... to do better and be better.