Recently I decided to revisit affirmation writing as a tool to cope with a bout of the blues. It's a kind of old-school approach, using pen and paper to craft a positive description of a desired state. Generally written in the present declarative "I am...", the idea is that you write the new statement out multiple times over a period of days or weeks, to effectively reprogram an existing negative belief.
Extra bonus points if you speak the affirmation aloud to yourself in the mirror, or into a
recording device of some kind and play them back.
Using affirmations as a panacea can be a little dodgy. One of my early mentors used to say bluntly, "Cramming a bunch of positive thinking on top of a big pile of sh*t is pointless. Eventually the sh*t has to explode." Fairly graphic, but to the point. She didn't mince words.
She advocated
inner process work, therapy, and a network of conscious support to deal with deep-seated beliefs and clean the psychological house. Then affirmations were introduced as a way of re-framing formerly negative beliefs about ourselves or our experiences. I tend toward this approach myself.