how do you feel about the term
physical illness? do you see that as having any negative connotations? some people get physically ill - just because. Are they weak people? People who get physically sick often get well with the right treatment.
Same thing goes for being mentally ill. With the right treatment some of us will get better. We are not weak people. We are not bad people. Our brains and emotions just need a little help. Try and ease up on yourself.