I just listened to this excellent interview regarding how "Sometimes words can become your worst enemy. Clinical psychologist and cognitive behavioural therapist Dr Jane Gregory tells how to defuse their power."
Great intro to CBT along with some practical strategies to manage the negative thoughts in your mind.
This is from The Allusionist podcast, by Helen Zaltzman, (a favorite podcast of mine which I highly recommend for lovers of words).
Listen to this, and other episodes, at TheAllusionist.org:
Or listen to it on the iTunes Podcast app: