Hi again @wildmissus, this really is a great thread, and good on you for starting it.

I am wondering if you would consider a low-carb approach, even just for a short while?
Although I have resisted this approach, because I do love sweet things and don't want to give them up, I am actually trying to go low carb for at least a week. This is partly as an antidote to the very high carb 3 weeks I just had while on holiday, but also to hopefully reduce the desire to eat more than I need (because the science is convincing around the effect of eating sugary carbs often leading to eating more of them).
I am also doing 4:3 just for the short term too, to shift the pounds I put on while away (I am not brave enough to weigh myself yet, but my clothes told me I had put on weight, as I must have done given the quantities I consumed).
I have only been trying low-carb for 4 days, but it does seem to be working. When I say low-carb, for me this has really been not eating anything with significant amounts of added sugar, not eating grains, and reducing my intake of starchy vegetables. I have reduced my fruit intake, but would need to stop eating fruit altogether to reduce my carbs to 50g a day. This I would find difficult, as I feel the need for something sweet to counterbalance the taste of the amount of fat I am now eating!!
I am also eating more protein than ideal, but it is the only way I can eat less carbs and still reach my TDEE. I just don't fancy eating the high fat products such as cream and sour cream without carb foods to go with them!!
I still felt hungry on the first day of my low-carb regime, but on the second day, no problems. I would love to have a chocolate or something sugary (high % cocoa dark chocolate is allowed, but I haven't bought any yet and don't really like it either) but the desire to eat these is nowhere near as great as it is once I actually start eating them!
Now I don't intend to give up sugary and other high carb foods, but I am hoping that a short break from them will help break the pattern of overeating on non-fast days. (I do realise that once I reintroduce the carbs, then my weight is likely to go up a bit, but I will deal with that at the time! And I will have to take care that I don't just start overeating again - though if I do, I will just go back to banning sugary carbs again for a while!!)
For the first time since starting 5:2, I have also calculated the calorie, carb, and protein content of all I am eating. I resisted this in the past because it does take time, but I do have the time and I am interested in the nutritional content of whet I am eating. I will only do this for a short while though.
I do tend to be an 'all or nothing' type of person - which is one reason why 5:2 worked for me rather than a conventional calorie reduction diet, but I now need to find additional strategies to help me manage the 'all' part!!!
My apologies that this has been an essay and so much about me, but I am hoping that my experience may be useful.
Again, best wishes for whatever strategy you chose!

Btw, given this has been all about me, I will add a comment about the perception of one's body. When I was overweight, I didn't see myself this way (self-deception??). But when I look at photos of me at that time, I now do look overweight. When I see myself in reflections now, I do look reasonably slim. But (and forgive the image this creates!!) when I am sitting naked on the loo and the tummy still flops over the top of the fat thighs, I don't look slim at all!!!!