Try changing the pattern in which you work out. After 5 grueling days on, and then 2 easy days off, who wouldn't find it hard to go back for another 5 days? Instead, maybe try scaling down to 4 days a week, and don't do it straight. Pick 3 days you're busiest, IE you might have to work all day tuesday, and also cook supper, drive the kids to baseball, etc etc. That would be a good day to take off.
So it might look like this
Sunday - off
Monday - Legs
Tuesday - off
Wednsday - Shoulders/Arms
Thursday - Off
Friday - Chest/Back
Saturday - Legs
Sunday - Off
I don't know, maybe something like that. Then just switch around so you're not stuck doing legs twice a week every week and then everything else only once..
Maybe plan9 or one of these other guys can expand on what im trying to say
