Cluster Three: The Mental Anguish of Rumination
The final methods are those that deal with the difficult problem of a brain that won't stop thinking about distressing thoughts. Worries predominate in social phobia, GAD, and other kinds of anxiety, and continual rumination can create nausea and tension, destroying every good thing in life. A metaphor drawn from nature for this kind of worry would be kudzu, the nearly unkillable plant that proliferates wildly, suffocating every other form of life, just as continual worry suffocates clients' mental and emotional lives.
I don't believe rumination is caused by deep-seated conflict in the way anger-anxiety might be; I think it's almost entirely a neurobiologically driven feature of anxiety. What clients usually worry about--often ordinary, day-to-day concerns--is less important than the omnipresence of the worry. Their brains keep the worry humming along in the background, generating tension or sick feelings, destroying concentration, and diminishing the capacity to pay attention to the good things in life. Seeking reassurance or trying to solve the problem they're worrying about becomes their sole mental activity, obscuring the landscape of their lives. Nor can ruminators ever get enough reassurance to stop worrying altogether. If one worry is resolved, another pops right up--there's always a fresh "worry du jour."
Therapy with these clients shouldn't focus on any specific worry, but rather on the act of worrying itself. If a ruminating brain is like an engine stuck in gear and overheating, then slowing or stopping it gives it a chance to cool off. The more rumination is interrupted, the less likely it'll be to continue. The following methods are the most effective in eliminating rumination.