Get ya arse off the lounge!!
Actually, I'm not sure what motivates me but I simply wont fail, it might take me longer then I'd expected, it might get there by other means, but if I want it, I'm going to have it, everything be damned, that's not to say that I am afraid of failure, I have failed at many things, actually, I've failed at one point at everything I have tried to do in some way, but ultimately failure isn't bad, it's a good thing, it's what you learn from but it's the desire to not fail that makes me find another way of accomplishing what ever it is I want.
I honestly can't say what it is that made me that way, I don't really understand the internal process that goes on in my head either but the guilt of giving up weights on me like having a ten ton truck sitting on me and I simply can't stand feeling that.
I can tell you one thing though that will really get me moving, I ask my self why I want it, whats the reason, what will it do for me obtaining what ever it is I want.
Then I just start working slowly and surely towards what I want and I don't stop until I get there.