I think I relate to what you are saying. Was thinking about posting something like this a while back.

Like you, moving away from personal problems was once a strong motivator for me. But after achieving that, nothing much in life motivates me anymore, apart from proving people wrong in my chosen sport, and getting fitter. But that's only a hobby, not something I can build my life around. Drifting through life seems to be the subsequent result.

I hate my job, so I'm trying to pursue a career in a more altruistic field of work, so that I'm doing something more interesting; rewarding by make people's lives better, and would get a little more money from it. But I'm not getting much luck in getting that job. But in all honesty, that career change is not proving to be a strong enough motivator to give direction/drive/meaning to my life.

So I'm stumped as well, mate.