I find that for me, self esteem is an ongoing process. Things I have done / things I do: face something I'm nervous about but that I want to do (this can also have the opposite effect. it's best to be careful with this imo), read about self esteem, exercise, be around people who I like and who like me and are nice (people who build you up). Also coming to terms that its not all my fault that I struggle. When I learned about ableism (and how society is not set up for those with any kind of disability), sexism (patriarchal society), my upbringing (not to blame my parents now, but they were not a good fit for me growing up)...it was a really empowering feeling.