punches, sabotage, and redemption

i have eleventy drafts of this post and am determined to get it out even if its incomplete and imperfect. Self sabotage and redemption are recurring themes in my life and the other day, another one of my phone conversations with m. led to the topic. She was saying that she understood the draw of physical contact sports like boxing or football -- that she bets the hit feels good in a psychic sort of way. Like you know its coming and you know you deserve (or at least are going to get) something, so its just nice to get it over with. This resonates deep within me. Now m. has somehow never seen Fight Club; this led to a discussion of the popularity of sparring/kickboxing/etc. classes for women and whether a women's fight club might be just the thing. I can't really do our conversation justice but will just examine a few points that stuck with me...

If you took your 'beating' physically, would you be less likely to put up with emotional or psychological garbage from others? This starts with the assumption that you believe you deserve or need or something negativity/difficulty/abuse. It sounds so obvious in black and white, but the truth is that I do believe it. And another truth is that when I've left various kickboxing/self defense/sparring classes, I've felt invincible. Not just physically. This feeling doesn't come from my yoga or step aerobics classes. {disclaimer: it has been years since I've attended ANY of these classes; lest I mislead you.}
Now, this is sick, but this is my true observation, as well: Repeatedly, abuse and negativity have, for a lack of a better way to describe it, brought out the best in me. It primitively frees me to be the best I can be. I told you it was sick so don't look at me like that. This freedom to be my best leads me to what I think my actual issue is: REDEMPTION. Do I believe I deserve bad things so much that getting them is a sweet relief that allows me to go on and become something good? Here's a self-sabotage example: I have always struggled with food/weight issues. Certain foods are like wonderful punishments for me -- double stuff oreos fit into this category. They're horrible for your body, destroy any diet you might try, and are delicious. Except I need to eat them until my stomach hurts. Like HAVE to do that. If they are in the house, I have to eat them until I hurt -- but then? Oh, that moment when I can throw the package away! It makes me want to be light, and good, and clean, and accomplished, and creative, and, and, and... Another example: I've been struggling with some things that I've never really struggled with in the past. Things like homekeeping. Could it be that I am not driven to prove how good I am without the presence of an abusive husband or boss? Finally, I have not one abuser in my life and suddenly, I'm tripping over things that have, in the past, been my strong suit. When I was married to prick, I kept a perfect home, never ran out of groceries, and made meals without the frozen feeling it all gives me now. Now things are taken care of, but without the energetic drive I had before. What gives?
If this makes no sense its alright with me. I just need to figure this out somehow.