SUBREDDIT: r/relationships
TITLE: I [25F] am in a transitional period in life and I don't feel like the transition is going well with my fiance [27M].
POST: So here's a very brief overview....

I met my SO right when my career began taking off about two years ago.  Both things happening were AWESOME developments in my life.  Although, a busy 60+ hours/week career isn't great for a person physically or mentally, and I let myself go a bit.
  
Lately I have been a stressed out nervous wreck and I just crossed into the "overweight" category.  I'm sick of it.  I started making immediate changes - doing things I enjoyed when I was single like painting and teaching piano, I've started working out an hour a day, and I'm working my ass off to improve in any way that I can, because I enjoy bettering myself.

Then comes my SO.  I work 50+ hr weeks still, he works part time.  When I come home, I have time to work out, eat dinner, and go to sleep.  I can't get him to do anything, and we bicker constantly.  His attitude SUCKS lately, he creates ridiculous messes around the house, doesn't do any chores, and I don't know how to talk to him.

We actually discussed it the other night when he spent more money than we could afford getting absolutely shit face drunk and he finally opened up to me, saying he was so happy I was doing things for myself again, promised he would get better with helping out around the house, etc. but now he doesn't remember that conversation AT ALL.

**Here is my question:  Is this normal?  Do all couples who live together/marry go through this?  What do I do when I can't stand him?  I'm trying so hard to be nice.
TL;DR: 
I am making very positive lifestyle changes and I have almost no free time to myself.  SO won't help around the house and has a shitty attitude that pulls me down.  What do I do?