Well if you're really down and out, look into counseling... Secondly, do not jump into a rebound relationship, it serves you no good and only delays the pain. Deal with what you've got, accept that fact that life has changed, and everything happens for a reason. "You are never where you want to be, but always where you planned on being." That comes from a good source ... In addition take time to get to know yourself again. Remember what life was like before you met this woman, and how you were fine. Enjoy, learn, and move forward one day at a time.
Peace