Emotions

It is an axiom of psychology that "emotions deepen by repetition."

If a person allows a state of feeling to thoroughly take possession of him,
he will find it easier to yield to the same emotion the second time, and so on,
until the particular emotion or feeling becomes second nature to him.

Each repetition renders the habit more firmly entrenched.

Every time you give way to one of these negative emotions,
the easier do you make it for a recurrence of the same thing, or similar ones.
Sometimes by encouraging the unworthy emotion,
you find that you have given room for the growth
of a whole family of these mental weeds.

Cultivate the feeling or emotion
directly opposed to the one you wish to eradicate.