 For example, anhedonia, which is often associated with depression, decreases an individual's desire to participate in activities that provide short-term rewards, and instead, allows the individual to concentrate on long-term goals.In addition, "psychomotoric changes", such as solitariness, decreased appetite, and insomnia also reduce distractions.For instance, insomnia enables conscious analysis of the problem to be maintained by preventing sleep from disrupting such processes.