Anorexia- What triggered negative relation to food/ your body?

My mother used to not feed me often..and on top of the constant abuse, I began to like feeling hungry. I think what triggered me was not eating often...and being constantly ridiculed about my weight. Comments about how big i was getting ...and the fact they purposely bought smaller clothes for me so I had to lose weight. I guess a bunch of stuff...

There are so many contributing factors to this question that I would not know where to start... The 'original' 'trigger' even I do not know because of how much has gone on... However some current day-to-day things that get to me include:

- The constant talk about nutrition etc. In school.

- My family (overweight) constantly wanting to diet and encouraging me to-to make them feel better... Telling me what to eat and what not to...

- My general state.

- Trampolining club members I am part of.

- My partner who is super thin...

- Friends who have disordered eating.