You can do it! It takes 30 days to form a habit. The first 30 is making a conscience effort which is where the struggle comes in. For instance, I always wanted a morning workout. I didn't know where to begin. When I got hospitalized for a few weeks, I was bored so I built a program which I did every morning. When I got out I kept it up. Granted it's only been 3 weeks, but now I don't feel right if I skip a morning. I've been doing it ever since.

Also, being obsessive about cleaning helps. I can't stand a mess, but I'm not like your sister. My drawers are a wreck.