I haven't been on here in a while but I just read this entire thread and felt compelled to post.
My take on your problem is that you have issues with instant gratification and recurrent body image issues. Not being a dick here but actually speaking from personal experience.
My significant other suffered from severe bulimia years ago and was actually hospitalized for it. Intensive cognitive behavioral therapy helped her regain control over her thoughts and actions. She struggles with it every day but now has the tools to dominate her disorder and not the other way around. Consider something similar
As far as instant gratification goes, achieving your physique goals through working out, diet and recovery is a long term cumulative process. You change diets, routines and philosophies like some people change their underwear. Consistency is a big part of the equation. You never allow your body to reach a healthy equilibrium. While those "keto" diets can initialize a reduction in body fat, they are not a healthy, viable long term solution to reaching your goals. Eat healthy foods in healthy proportions and improvements will be inevitable. Macros and food choice homey!
Your muscles and brain depend on certain amounts of carb for proper functioning. Restricted carb diets impair cognitive functioning. By the way, I'm talking sweet potatoes, brown rice, oatmeal, fibrous veggies here, not mountain dew or snickers bars.
Also, spending 2-3 hours in the gym is severely catabolic. I see that you're trying to cut back and that's good. I perform cardio AND strength training in under an hour. Diet and recovery is 80% of the equation. Don't kill yourself in the gym or you will become one big catabolic mess. Maybe if you were juicing and sleeping 10 hours a day with no job could you effectively recover from your workouts lol.
I could go on and on but to summarize, stop changing things so often and work on your personal/mental stuff. In the grand scheme of things, does it really matter if you aren't "perfect"? I promise you nobody will be standing over your coffin when you're dead talking about that 'subcutaneous layer of water he just couldn't rid of' or your 'subpar V-taper'. Eat, drink, workout and be merry!