Lately, I’ve been feeling quite depressed, largely because I have had too much free time on my hands.  This phenomenon is new to me.  I cannot remember a single period of time in my life where I had three months of waking, sending kids out the door, staying home—alone, for 8 hours or more each day and having nothing mandatory to do; no job to show up to; no deadline for edits to be done by; no oncology appointment to worry about.  Most of my life has been spent with a little one, or medium one and even a large...