The trouble with psychology ...

The trouble with psychology is that it doesn't take human nature into account.
 Ruth Rendell

Quotes from the same author

there must be a routine to life, a framework to hang life on. Routines were what kept you sane, gave you something to do at this moment and at that, definite places to go, positive things to do. Abandon it and that way madness lies.
 Ruth Rendell