If human emotions largely result from thinking, then one may appreciably control one's feelings by controlling one's thoughts - or by changing the internalized sentences, or self-talk, with which one largely created the feeling in the first place.
Albert EllisPeople and things do not upset us. Rather, we upset ourselves by believing that they can upset us.
Albert EllisIf you would stop, really stop, damning yourself, others, and unkind conditions, you would find it almost impossible to upset yourself emotionally - about anything. Yes, anything.
Albert Ellis