A failed programmer!

Back in school the computer screen was my canvas, the keyboard was my brush and i filled it in with the colors of a language. Helping my fellow students debug and find the solution to their codes. Loved to do that its been 10 years thats i have programmed anything I am trying to figure out where is lost it all. Never got into a job working as programmer as in all the interviews I was asked of definition of things I could never remember but give a something to build or debug I could work it as a charm. Even though didn’t work a programmer kept on programming at home making free programs for friends or helping debug codes. But then I stopped and don’t know why and I really wanna get back into it not for others but for myself to see if i still have it, but its been so long new languages new platform and don’t know where to start. Or should I accept myself as a failed programmer!