This productivity tip is taken from the Getting Things Done book (by David Allen) - which is a personal productivity methodology that redefines how you approach your life and work.

The Two Minute rule basically says, any action you've figured out that you could actually complete within two minutes, of where you are in the context you are, in the location you are, you're better off completing that action right now, rather deferring it.

Many people have stated just this one rule alone from GTD has provided significant productivity gains.