If you're doing this for years and still can't see any improvement or progress, then I think there is a problem, kung ano yun? I don't know, maybe has something to do with your motivation, or knowing the difference between interests and commitment, like bakit ka tumutugtog? Or maybe something to do with focus, and dealing with distractions. Anyway ang mahalaga na eenjoy nyo yung music, but if you really wanted to go for it, well, I suggest, Zen meditation would help and of course TIME and a RIGHT METHOD of practice.