If you know the song already, and you're playing with someone who doesn't and is reading off a songsheet, remember Cliffhanger - "Don't look down". If you're as daft as I am, chances are you'll get hung up following the songsheet exactly, instead of following how you know the song goes. This applies particularly where there's choruses, and the choruses aren't marked on the sheet between verses, cos everyone knows they're there...

Grab.