Beginning in the 1960s, many studies showed that people who hold what we call irrational beliefs are significantly more disturbed than when they don't hold them, and the more strongly they hold them, the more disturbed they tend to be.
Albert EllisPeople don't just get upset. They contribute to their upsetness. They always have the power to think, and to think about their thinking, and to think about thinking about their thinking, which the goddamn dolphin, as far as we know, can't do. Therefore they have much greater ability to change themselves than any other animal has.
Albert Ellis