Going beyond 36 hrs was a huge mental block for me too. After doing several 36 hr fasts, I found that I adjusted and I was able to push to 40 hrs and then eventually 48 hrs and longer. Taking electrolytes on the first day of the fast was a game changer too. I don’t think it’s strictly necessary for 36 - 48 hr fasts but for me it makes it so much easier.
One trick I found is to eat fat. Fat will not break a fast. Sugar, carbs, and protein will. Fat will not raise blood sugar or insulin. Butter, coconut oil, and MCT oil are good. A product I found is Keto Bricks. There main ingredient is cacao butter. The flavor I like is chocolate and peanut butter cup. There are spendy, but I like them a lot.
First of all let’s be adults you could do it.
When I wanted to extend my fast for weight loss, I would eat something small like cheese. It worked for me. Now I realize that some warm or cold water with electrolytes is enough and I don’t need crutches.
Your eating sounds emotional not hunger driven.
Find another way to release emotional tension.