Too hot or too cold

My personality has always been one that goes to one extreme or another. I will get super strict about my diet, for example, and start hitting the gym hard several times a week. And then something will shift, I can’t say how or why. It might be three weeks, it might be six months, but then I will go the other extreme, stop working out altogether, and start eating like crap. This is true in basically every aspect of my life, so it might actually be a mental disorder I guess. Recently my shifting between extremes has been triggered by my climate control system of all things, and it is ruining my home life. I am just finding it impossible to find just the right balance between heating and cooling. When the A/C is on that cool air blowing across my pale skin feels like a sheet of ice, like literally I feel like I am getting frostbite. When I turn it off, then I immediately start heating up and within a half hour I am sweating profusely.I don’t mean that I switch on the furnace, I mean the sheer absence of AC starts making me overheat. So what am I supposed to do, turn on the AC and freeze, or leave it off and slowly roast to death like a suckling pig? I have been playing around with some variations, and I think that maybe if I switch off the cooling but keep the fans of the HVAC system running that might just get the job done.

HVAC unit