Why do people persist in attempting to change themselves, despite repeated
failure? Self-change is often perceived as unrealistically easy to achieve,
in an unreasonably short period of time. Moreover, embarking on self-chang
e attempts induces feelings of control and optimism that supersede the less
ons of prior experience. Finally, people tend to expect an unrealistically
high payoff from successful self-change. Some sorts of self-change are feas
ible, but we must learn to distinguish between realistic and unrealistic se
lf-change goals, between confidence and overconfidence. Overconfidence bree
ds false hope, which engenders inflated expectations of success and eventua
lly the misery of defeat.