I have many pet peeves, but one of my biggest is people who don't smile (search).

Non-smilers tell me they don't smile because they have nothing to smile about. I don't buy it. We each bear our own cross in life, some a lot heavier than others. For my money, a good attitude and a good smile, go a long way.

All I know is that I like to be around smilers. And don't like to be around non-smilers.

Look, we can't always smile. But I think we should try, even if you have to fake it. That sounds horrible. But I think our very economy depends on it.

Think about it: The waitress who refuses to crack a smile, usually her service stinks. You don't like the waitress. You don't leave a good tip -- or any tip. She's ticked off. You're ticked off. What have we solved here?

The guy at the electronics store who couldn't be ruder. You lose your temper. The store loses a sale.

I've got a plan: Everyone smile. The people serving. The people served. Come on, everybody.

Studies support what I'm saying here: Smilers get better tips, smilers have more friends and -- this is right from Dr. Ruth last week on my show -- smilers make better lovers.

Smilers make even non-smilers happier. Non-smilers themselves have told me they hate being around non-smilers. Imagine that: They make themselves sick!

So try it. Smile. I'm convinced you'll feel better for it and our economy will be better off because of it.

Watch Neil Cavuto's Common Sense weekdays at 4 p.m. ET on Your World with Cavuto. 

Neil Cavuto serves as senior vice president, anchor and managing editor for both FOX News Channel (FNC) and FOX Business Network (FBN). He is anchor of FNC's Your World with Cavuto - the number one rated cable news program for the 4 p.m. timeslot - as well as the FNC Saturday show Cavuto on Business. He also hosts Cavuto on FBN weeknights at 8 p.m. In addition to anchoring daily programs and breaking news specials on FNC and FBN, Cavuto oversees business news content for both networks and FNC's weekend business shows, including Bulls & Bears, Forbes on Fox, and Cashin' In. Click here for more on Neil Cavuto.