Why am I always hungry??

In the past, when I was unwell, I used to not eat, but now I eat and I really eat 

But anyway, thank you dad, because I inherit your metabolism, I can eat everything but I'm still thin and at the same weight as always!!!

However, when I feel like I eat too much, I feel really bad, I instantly regret it, no matter how many times I can do it again. I also went through my phase of depriving myself of eating certain things I liked to become thinner, (my blood pressure just dropped and it didn't do any good) 

I'm not ashamed to talk about it because I know that maybe there are people with the same feeling as mine, I even researched a little about it and I think it's because of my anxiety, when I spend too much time standing still or doing nothing I I usually want to be hungry, and I don't know what to do haha, but I'm getting better at it