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 EllisI started to call myself a rational therapist in 1955; later I used the term rational emotive. Now I call myself a rational emotive behavior therapist.
Albert EllisWhining about your own, others', or the world's failings is a main element in what we usually call neurosis.
Albert Ellis