On my drawing board I have a piece of paper with various bits of good advice from artists writ up on.
Today I took this classic from Wally Wood to heart:
"Never draw anything you can copy, never copy anything you can trace, never trace anything you can cut out and paste up."90% of the basic panel of the guys sitting on a sofa was traced from a previous strip of them sat on the sofa and the arms were drawn separately and it then it was all cut and paste in Photoshop. Pasted in layers like simple cell animation. The fastest strip I've drawn in weeks. It wrote itself instantly too. It popped into my head as I was opening the car door coming home from work - and I had it written down in the sketchbook before I turned on the ignition.