How to heal after a toxic relationship?

I've recently come out of a relationship with someone that was toxic and manipulative. I gave more than I got in return and sometimes the relationship was one sided. I stayed longer than I should have and when I did try to leave on multiple occasions , I was guilt into staying. Now that I've cut them off, I'm feeling free but at the same time I've also noticed that my self esteem has taken a dive. I feel like I'm not good enough. I know that my worth is not tied to anyone or how they treat me but I dont feel as confident as I did before. How can I get over this?