bad thoughts, bad feelings, bad behavior

" Don't let them in, don't let them see. Be the good girl you always have to be. Conceal, don't feel, don't let them know" -Elsa Disney's Frozen

Often as children we receive messages that we should not feel or express feeling, especially "bad feelings". The truth is that being in touch with our emotions and expressing them appropriately is imperative to our health. (source)