Basketball to nothing

I have always tried my hardest at everything I do, always putting in my best effort. Basketball has always been my thing I have been working on it for the last 5 years day in and day out. The thing is I got seriously injured and Basketball is done for me now. It was my entire future and now I dont know what else to do. At this same point in my life my girlfriend just left me and I got fired from my job.
I have nothing going for me anymore and I just want to end it.
I dont think there is any going back anymore.
I just had to let someone else know i was gonna do it. Ill let you all know how it goes if it doesnt work.
All I can say is I shouldve tried to learn more then just this one thing.