Ditch Negative Groups

Don't stay too long where you aren't understood or appreciated.

Just as people with ADD gain a great deal from supportive groups, they are particularly drained and demoralized by negative groups, and they have a tendency to stay with them too long, vainly trying to make things work out, even when all the evidence shows they can't.

(From Answers to Distraction, by Edward M. Hallowell and John J. Ratey)