Forgiveness

I've been trying so hard to heal and become the person I want to be and as I've made progress , I've realized that there are still some things keeping me from actually healing and allowing positivity in my life. There are still things that I'm hurt about, bitter about, still some mistakes I haven't forgiven myself for and people I haven't forgiven either..

i feel kind of stuck, so many people saying to just "let it go" and "forgive" but what am I supposed to do just reach into my mind and pull it out? (Joke)

I don't know where to start or even how to, I journal I meditate and that helps me know what's underneath the surface but the problem is actually moving to the next step in the process which is letting it go and forgiving...I feel stuck, I don't want to keep reliving it, and going over what happened --- I just want to let go and free my heart from the pain, anger, hurt and sadness so I can move on and become that person for myself and for others.

has anyone ever been able to let go and forgive something or someone that was hard for them to? If you're comfortable, could you share how you managed to go about that process? How you let go or forgave yourself or someone else?