Something else, almost anything, besides chasing guys, yes chasing, or trying to make a relationship happen overnight.
I just went back through all your posts and its pretty obvious yourself esteem is to tied to whether you have someone or not.
Get back to the basics of friendships, and activities, that you can enjoy, because honestly, you are a lousy confused partner for love and romance. Over time, and a bit of effort from you, and some variety, and balance in your life, you can have good clean adult fun to build something for yourself.
Until then... you will be caught in the emotional circle you are trapped in, and never get out.