The thing that drives me is a very strange sort of motivation. While I won't say what it is, it is very effective because I constantly find problems with myself to improve on. So this kinda motivation probably derives from some inferiority complex that has to be managed properly.

Good thing about having this driving factor is that it really drives. Because at any point of time, I cannot stop thinking how I should improve myself and how time is really running out. On the other hand, I don't want my confidence to shutter because I keep thinking I'm not good enough.

It's a little like tug of war. Confidence VS this strange motivating factor.