Zero tolerance: It’s the only way to break a bad habit. So don’t indulge – scratch that itch mentally. Here’s how.

#1 – Wear a Rubber Band

When you feel a craving coming on, snap your wrist three times quickly. Scientists and torturers call this negative reinforcement: Craving equals pain. It’s akin to smacking yourself on the nose with a newspaper.

#2 – Pour Yourself a Glass of Cure

When it comes to nervous habits, water is your secret weapon. When you feel a craving coming on, chug at least 10 ounces. It’s amazing how well this works.

#3 – Switch Sides of the Bed

If you’re a consistent habit former, you should overhaul your routines – what time you wake up, what you eat for breakfast, what route you take to work, and so on – every 3 months.

Source: Men’s Health magazine, May 2008