Smoking! I used to smoke from about 16-23 years of age, when I was pregnant with my first child I quit, haven’t touched a cigarette since! The smell of them makes me feel sick. Can’t believe I ever smoked to be honest.
Also gave up caring what other people think about me about a year ago and I haven’t looked back
At the moment it's therapy- not saying I didn't grow and change, but the last 8 months or so of it was just spent going around in circles and I did it for almost 4 years. It's nice not analyzing every single thing.
Watching soaps. Never once felt like dipping back into them. I just stopped caring about the characters and the fact nobody could have a normal pregnancy/wedding.
I spent far too long playing the Sims a while back and even now I get hooked on silly apps and games but try to limit it.
Years ago I used to buy loads of Sunday papers and spend most of the day reading them. Now I only read a few newspaper websites daily for the most interesting stuff.
Smoking (and, several years later, vaping)
Diet coke (mostly avoid caffeinated coffee too)
Newspapers; weekly and monthly magazines (I buy one particular bimonthly mag now and read it cover to cover!)
The career I studied for. Feckin' hated it.
Oh and milk (and most dairy). Great decision, I feel much less shit now!