challenging yourself!?

"Potential"

I've been told for years that I have a lot of potential, but lately I keep procrastinating and pushing things onto my future self instead of dealing with them now.

So I wanted to ask people who've actually managed to stay on track for years,

And let's be realistic;

what keeps you moving when motivation disappears? What's the driving force behind it all?

Is it discipline? Fear of regret? Ambition? A sense of purpose? Something else?