Don't know what to do.

Just to add barely nothing to this thread; you clearly do have some motivation... you want to change this bullshit I assume so there it is right there. I'm in the same boat, totally sitting here lacking any "motivation" to get my life on track but the motivation is right there in our faces if you really want to look at things rationally.

I'm in the same situation sans the wife, since I got dumped for not moving fast enough in life for her, so I understand how you feel but you already know what you probably need to do.

So step back and analyze what got you where you are and decide from there; getting married "too soon" can be rectified IF IT REALLY HAS TO BE because really, your life is your life and you need to do what you need to do to be happy. If you can't go to school without her complaining at you then you may need to just find someone else. (being totally blunt here, but I honestly believe this can be worked out without the need to drop her if you talk it out with her)

People aren't supposed to hold the ones back that they love... if they love you, they'll find a way to support you while you try to better your life. That's really all there is to it.

How ya doing, buddy?