I haven't been happy in such a long time?

That's a good thing that your actually trying to get out of the situation. Try meeting someone new so you could get over your past abusive relationship, that can really help. Your doing good, keep on looking foward to happy things and don't stop. Explain your feelings to someone you trust, don't hold it in. That will make you feel a bit better. And try going out with friends more to keep you occupied and get away from all those thought. Hoped I helped(: