Quotes from David J. Miklowitz

Losing even a single night's sleep can precipitate a manic episode in people with bipolar disorder who have otherwise been stable (Malkoff-Schwartz et al. 1998). In parallel, sleep deprivation can improve the mood of a person with depression, although only briefly (Harvey, 2008).

For example, cognitive-behavioral therapy (CBT) relies heavily on homework assignments, such as keeping track of your moods, thoughts, or self-statements; challenging your assumptions and replacing them with alternative ways of thinking; or keeping behavior, sleep, and mood charts.