I feel guilt and regret after I eat anything substantial. How can I remove remorse from my diet?

The best way is to just remind yourself that your self worth is so much more than the food you eat and the calories consumed. I know that it is way easier said then done but just trying and not giving up is really important and remembering that it is okay to have some bad days.

Not feeling guilty about eating can be difficult and a long process. You can always take steps to manage the situation though. It's likely that it will feel unnatural in the beginning, but an easy first step is reminding yourself that you need the nutrients and that it's not something that will make you gain. Starting getting meals of "safe foods" can also be helpful, since it takes off some of the pressure. You can get little by little used to larger portions, without panicking and triggering restriction again.

Organic foods make a great alternative to just regular nutrition. Fresh fruits and veggies, limit processed foods, etc. Going organic may help you feel better about eating and you will still get the nutrients your body needs.