Most Helpful Guy
I am so glad that you are leaving him and putting him in your past. I'm not saying it will be easy but you hadn't finished mourning one loss when you have been struck again and life would seem hard now.
I think the idea would be not to go from where you are now, to a total transformation, but give yourself time for that transition. Don't try and substitute what seemed like a bad relationship and then experience, with something that you might be rushing into. You're still young and there is plenty of time. You're better than you even realise so take some time and get to know yourself a bit more, what you enjoy, hobbies you like, your career, being independent...
Most Helpful Girl
You will always remember this because it hurts you a lot but always stay positive and hopeful, the sun always shines after a storm and things get better. Just always remember you never did any wrong he did so don't blame yourself for anything, karma comes around.