[MissC]

I think that I have a serious problem

It sounds like you have decided you have a problem. Now you need to decide you're going to fix it. We can't do that for you.

That may sound simplistic to you, but you appear to communicate well enough to grasp further context than "get off your ass and do something about it."

People can sympathize or commiserate with you -- anyone who has ever kicked a bad habit or addiction, myself included -- but in the end, no one is responsible for corrective action but you. Whether you need someone to talk to, or don't; whether you replace it with another bad habit, or don't; or if you do nothing... no one but you can make that call.

You alone have the power to change yourself. Once you decide to, nothing will stand in your way.

and would like to know if anyone has had success with therapy or behavioral conditioning

Wouldn't know. But I do know that sometimes making one or more other lifestyle changes can help you move on to a better phase of life. For example, changing to a healthier diet (over time), or getting more exercise... consciously strive to make some good new habits. Once you find out how easily that comes, it's easy for your brain to get the idea it can kick a bad habit.

All that is, of course, a simpler way of saying that you behaviorally condition yourself, whether you pay anyone to help you or not. (That decision rides on whether or not you have a friend who is near & dear enough to talk it out with. If you don't have one, rent one. That's therapy.)

I appreciate those that would like to be comforting, but I need tough love and real talk here.

Picture Dr. Phil telling you to quit f***ing whining and decide you're going to improve yourself.