A sad observation: everytime I encounter a struggling friend with dysfunctional thought patterns, I work through their thoughts using CBT techniques (without mentioning that's what I'm doing). This almost always results in a calmer friend who starts feeling better about the situation, or at least more confident in their ability to deal with it.
I then tell them what I'd done to improve their emotional state and how they can learn to do it for themselves by pointing them to CBT and Burns... and a few months later I find they still suffer from dysfunctional thoughts and haven't bothered following my advice.
Funny thing is I was the same; it took a bout of severe depression and reading "Feeling Good" exactly at the time when I could introspect my severely dysfunctional thought patterns for me to accept my situation (having purchased the book a year previously but being dubious about its claims of my "mild" depression at the time). I don't know if this is social conditioning (only "weak" people get depression) or general ignorance of the fact that the mind needs "maintenance work".