I'm sorry for these rough feelings you're going though, why do you feel that your life needs to compare to your ex boyfriends?

I know how you feel about the work thing. I worked at a movie theater until I was 24, and after that I worked in a factory for a year. It may not help for me to say this now but I think that's pretty normal, I'd say most people that I know that are in their twenties are working jobs like similar to yours, it's nothing to be ashamed of. I know that most of these kinds of customer service/minimum wage type jobs are just depressing on their own but I'm sure you will find yourself in a better place in your own time.

The pressure you feel to be better is pretty normal too, but I say leave that mentality behind if you can, it's just extra baggage. Try the best you can and that's good enough. There's no reason for your life to live up to any standard.