Because eating disorders are often too much about shame and guilt, self-hatred and low self-esteem, it is really important to learn skills like self-care, both in terms of learning to be mindful, but also to provide counter-point to the harmful messages and emotions that come with being eating disordered.

This article by The Mighty lists 101 self-care tips (obviously you won't do all of them, but scan through and see what resonates with you.  It's long, so maybe consider reading it from start towards finish, and then go to the end of the list and read is from finish towards start.