Rumination is the constant urge for a person to focus their attention on their troubles, misery or worries and possible causes or consequences. Rumination is having thoughts about earlier events, failures, abuse or hardships. The tendency to ruminate often serves as a big factor for clinical depression. People who ruminate a lot are more likely to become depressed and to carry major mental troubles, such as generalized anxiety disorder and suicidal behavior. One type of rumination, the state rumination, is connected with pessimism and serious neurosis.