Summer,
It is so easy to fall into the trap of just doing the same thing over and over again. I am an adjunct, teaching only at night and have a full time day job, so for me, the temptation to cut corners is huge. I have found that if I take a quarter off, I get recharged, motivated and re-focused. I use the time off to go thru my classes, my notes and redo anything - tests, lesson plans, presentations etc and change if I noted issues or problems.