Have kids. Never wanted any of my own, just wanted to be the cool aunty to my friends' kids. Then dumbass 17 year old me believed my boyfriend when he said he'd pull out in time. Nope! Anyway, now I'm a single mum to an eight year old, and I am very careful about contraception, because as much as I adore my kid (I totally lucked out, she's smart, polite, kind, and I believe at least half of that is nature), I'm 90% sure I don't want any more kids.
Drugs, swearing, and I promised myself I would never stop believing in god. All when I was a kid. Lol, I feel like I'm giving a super typical answer. That's the most honest answer I have to give though.
I promised myself that I would never work retail again. When I moved from California to West Virginia, I was unable to find work for 9 months. It was become a coal miner or find a retail sales job. I sucked it up and went back to retail management and I have been 'stuck' for the past 5 years. I do have plans to open a business of my own though when the time and place are right.
Slept with my ex.....
Buying video games. My Steam collection hit over 200 games last Christmas and I told myself that I had enough games to last for quite a while. But then Reddit/Snapzu/Internet keeps showing cool screenshots and videos of X game . . . then it's on sale . . . then I buy it . . .
When I was a kid, I swore I would never smoke cigarettes. I ended up smoking for 13 years.