I've been thinking about this quite a bit lately. So many times I have read and heard, that until you know the reason why you do this behaviour, and own up to it, you will not be successful with weight loss efforts and maintaining.
I honestly can't say I have a reason why. It's not like I can contribute this to one particular event in my life that triggered it. It's frustrating to me to not be able to understand why I do it. It's usually just simply making that choice over doing something healthy when I am busy or stressed or upset.
I am beginning to feel like if I don't get this "light bulb moment" and determine the "real" reason, I will never be successful and will just continue losing and gaining.
I have been struggling a lot lately, and trying to get myself back on track (yet again).
Is it enough to be committed, and to understand that we do have bad habits, but plan for them, or do we really need that aha moment?
Any thoughts on this?
Thanks in advance!

Not everyone has "a moment". It isn't necessarily some big awful moment from your past. Often it's a matter of figuring out how to work around our own individual personalities, weaknesses and strengths. You appear to have trouble saying "no" when you're busy or stressed. So plan for that. Try to have go-to meals ready at a moment's notice in your freezer. This can be frozen dinners pre-made or purchased or it could be something like always having frozen chicken and veggies in your freezer for nights you need something quick. And do not keep poor choices in your home so that you have no choice but to pick good choices. Find some good choices you can "go to" at fast food places for nights that you just have to go fast food. For me it's a grilled chicken sandwich at McDonalds, no mayo, split the bottom bun in two and use it for the top and bottom. There's no thinking involved. I always have a plan, and that last one is my last resort.
) It really doesn't matter HOW we learned that -- our gramma showed us love with food, we were latchkey kids and snacking after school became the go-to activity, etc, etc, etc. Like Eliana said, the key is to figure out what our own personal trigger moments are (stress, sounds like, for you), and then try to incorporate different coping strategies for those times. Food isn't the ONLY thing that can help calm a stressed person, or entertain a bored person, so it's just up to us what we can figure out to do when food used to be our go-to. 
