OCD and NPD is a deadly combo to be diagnosed with, which I did. I think I might be a bad person, but i want to be good, i want to be a better person.

Im 21 and I started to notice that there was something wrong with me, i daydreamed about this grandiose version of myself, couldn't stop looking at the mirror, even tho im not attractive at all, I constantly compare myself with others, I applied to this job in a local business that was downtown but instead they send me to a local market to help the mother of job owner I applied with, mind you I'm a college graduate and this was sort of starting my career, so I simply declined and felt so guilty because she seemed like such a sweet lady and I was being kind of vain. I think about that moment a lot and start reminiscing about every other moment in my life that I have been acting this way, which is also sign of OCD, that I was diagnosed with in 2018

My question is, can I still be good? Can I change for the better, I heard that being aware of your diagnosis can help you progress, Ive made mistakes and have behaved like an asshole, for most of my life ive been so obsessed with myself and my goals and I don't even know anymore what I want and who I want to be, i feel so scared that Ive ruined my life and maybe for others and I didn't even realized, is there really a chance for me?