Tempted to try a new get-slim-quick scheme? There's a good reason, Fox News reports.

1. Start strong.

 Diets that are low-carb and high-protein often start with an "induction" period when you swear off refined carbs or eliminate almost everything except lean protein. It's hard-core, but that's part of the point: Pain equals pride.

"A drastic change makes you feel tougher, and you believe you'll be successful because you survived it," said SELFcontributing experts Stephanie Clarke, R.D., and Willow Jarosh, R.D.

"That way, you avoid falling back into old habits, because you won't want to put yourself through that ordeal again," they said.

2. Narrow your options

 Limiting your diet to, say, grapefruit, helps take the guesswork out of eating.

"The more options you have, the more likely you are to make a bad choice," said Jennifer Taitz, a psychologist in New York City.

Not only that, when more options are available, you're prone to gorge. Brian Wansink, director of the Cornell Food and Brand Lab k conducted a study giving people free rein over a bowl of M&M's. When the bowl had 10 colors of candy, people ate 43 percent more than when there were 7.

"Variety, or even a perception of it, can increase consumption," he explained.

Try plotting out four or five healthy options for each meal and rotate among them, nixing what's not on the plan, Taitz suggests. Continue until you get sick of them, then refresh your menu with a new set of choices.

3. Throw some money at it.

 Fad diets often involve purchases— elixirs, apps, books, seminars. There's a mind game at work: Spending cues you to make an emotional investment. And since you ponied up the cash, you feel obligated to stick to the plan.

4. Be a trendsetter.

 Fact is, fad diets are newsier than celebrity breakups. When your cube mate asks about your discipline, you get a little share-your-secret ego bump and it helps you stick to it, Wansink said.

5. Make it new.

We love novelty, and fad diets play into that. Starting a new meal plan can keep us engaged and excited.