I need help.

I’m honestly writing this because I don’t know what to do anymore. Earlier this year I went through a shitty callback to someone I used to like, and I tried to move on with another girl. I fucked things up by go in too fast and being too much and not saying anything and now I can’t contact her at all. I can’t get over her at all, and I feel like shit whenever I think about it. Is there any hope for me?