Were you a minor when you was baptized?
The congregation of Jehovahs Witnesses can provide an temporarily sense of safety and stability, especially if one tends to live a turbulent life "outside" the JW congregation. The backdraw is as allways boredom, so you go back to have some turbulent life for a while aso. Right?
It looks a little like manio-depression (not that you are), where on swings between two extremes. What doctors usually do in such cases are to calm the manic period and give anti-depressives in the depressed period. Often, if the patient can be stabilized, the manio-depressive periods will flatten out and the patients life become more balanced.
JW's also induce a high sense of guilt in their members, which creates an anxiety that is calmed only if you stay on the beated path. When leaving the path that anxiety are felt from deep within and we normally seek to calm that anxiety, perhaps with parties, alcohol and drugs. Another way to calm the anxiety is to go back to the congregation, so one does "the right thing" and thus does not feel anxious.
What you (we) need to remember is, that we just as we are supposed to be. Let noone tell you any different. You are a good person. Get over the guilttrips, better yet forget about the guilt. For what is it of use? Focus on responsebility, for your own life as well as the projects you involve you in with interest.
The JW's are fundamentalists who tries to keep their grip on you with guilt, fear and family/friendship bonds. The Watchtower expects you to let the JW's become your whole identity, surpressing own thoughts and feelings to live by their guidance. To keep their grip on you, to keep you working for them and supporting them. They do not deserve your support, they do not deserve your efforts, they do not deserve you.
May I recommend you to seek an education? (if you are not at it allready)