Feeling Like Things Will Get Bad - Seeking Advice

I've been doing really really good lately. My bf moved in, my cat is doing well, my life is looking up, i got my dream job and hopefully soon i'll be accepted to the college i want to attend. i'm able to buy the things i want for once and as an adult i can do basically whatever i want in this imbetween jobs time. why do i still feel like things are just going to get bad and why do i still want to hurt myself? i want to be better but it feels like that isn't an option and we only ever gain coping skills, not real solutions. does anyone have any advice?