I know that this might sound cruel and not a good practice, but I feel I must be open and admit the following.

When I get carried away by self-deprecating thoughts concerning my physical appearance and behavior peculiarities, I go and watch some videos about people who have some serious health conditions and who have built their lives despite all the problems they have.

I know that, in general, such people don't like that they are being used as "inspirations" for others (although I myself being legally blind since birth don't have any objections to that), but that is how our subconscious seems to work - your self confidence gets a boost whenever you see someone in a worse situation than you.

That's why bullies like to bully. In this sense, helping some person with special needs could also be considered "bullying" because the helper is still using that person to get his own satisfaction. But it's much more constructive because in this case both sides get the boost of positive emotions, unlike when bullying.

Also, you could think about your visual style - is there some particular features that you'd like to hide or to accent? It can be done with many tricks - hairstyle, glasses, some makeup, clothing patterns etc.