Then say that instead of narcissistic.
Then say that instead of sociopath/psychopath.
Then say that, instead of borderline, manic, or bipolar.
Then say that instead of delusional, schizo, insane, crazy, demented, etc.
Did you mean: uncompromising, obdurate, obstinate, ignorant, intransigent, adamant, heedless, inconsiderate, stubborn, indifferent, narrowminded, indifferent?
Then say that instead of deaf to criticism, falling on deaf ears, etc.
Did you mean: ignorant, imperceptive, blinkered, narrow-minded, inconsiderate, oblivious, rigid, obstinate, wilful, intransigent, unobservant, obdurate, unyielding, pertinacious, prejudicial, unamenable?
Then say that instead of "blind"
Then say that instead of OCD or neurotic.
Then say that instead of histrionic or borderline.
If you mean you are/someone else is shy, quiet, introverted, timid, reserved, a loner, a wallflower, then say that.
Consider instead: theatrical, agitated, frantic, distraught, absurd, dramatic, +
Then say that instead of lame, which refers to someone who can't walk without difficulty (thanks for the suggestion!)
Then say that, instead of multiple personality (which is an outdated term anyway - the preferred terminology is usually plural or system, and the medical +