I appreciate your suggestion, though I think I'm in deeper trouble than that. Mindless physical work like gardening seems to free up cycles for me to ruminate,

I appreciate your suggestion, though I think I'm in deeper trouble than that. Mindless physical work like gardening seems to free up cycles for me to ruminate, which I have to actively suppress (à la "He took a duck in the face at 250 knots" -- http://books.google.com/books?id=-O3r6D1KutAC&pg=PT36&dq=%22he+took+a+duck+in+the+face+at%22&hl=en&ei=XjlYTaLkA8K78gaSoYS2Bw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCcQ6AEwAA#v=onepage&q=%22he%20took%20a%20duck%20in%20the%20face%20at%22&f=false http://books.google.com/books?id=-O3r6D1KutAC&pg=PT36&#3...).