You keep compliments in your pocket and criticism in a frame. Switch the storage.

Praise and criticism do not get stored the same way. A hard sentence gets replayed for years while ten kind ones fade by evening, because your mind treats criticism as a threat worth remembering and praise as pleasant noise. Over time this builds a false record, and you end up believing the harsh version because it is the only one you can quote.

Start keeping the good ones somewhere real. A note on your phone with the exact words, the date, who said it. Read it on a bad day, not to argue with yourself but to restore the part of the record your memory keeps throwing away.