Shortly after I met my friend Chris Utterback, I found myself having an especially challenging day. I decided to give her a call and when she answered the phone I didn’t say hello. “Make me laugh,” I demanded.

“Just a minute,” she said. “I have to get my joke folder.” Joke folder?

When she got back to the phone she explained that she kept a file folder of cartoons and stories that she found funny. She promptly began reading me her favorites and before long we were giggling like second graders.

By the time I hung up the phone, the world was looking considerably brighter again.

Ever since, I’ve kept my own Make Me Laugh folders, along with other emergency supplies for moments when I need a dose of hilarity.

If you’d like to expand the amount of laughter in your life, here are some ideas that can help.

* Memorize this quote. Ernest Hemingway said, “The seeds of what we will do are in all of us, but it always seemed to me that in those who can laugh in life the seeds are covered with better soil and a higher grade of manure.”

* Take a laughter class. If your local adult ed program has such a class, sign up at once. If you can’t find such a class, get a set of CDs or tapes from your favorite comedian and play them in the car. I’m especially fond of Prairie Home Companion’s Pretty Good Joke Show CDs.

* Meet my friend Karyn Ruth. The most hilarious trip I ever took was the London adventure I shared with Karyn Ruth White. We both recall it as a week of nonstop laughter. I always look forward to seeing her on my trips to Denver, where she lives, and know that our phone chats will be filled with noisy laughter.

If she’s not available to accompany you on a trip, order her Kiss My Botox CD, her Laughing in the Face of Stress DVD or her book Your Seventh Sense that will help you polish your own funny bone. They’re all available at KarynRuthWhite.com.

* Read something funny. There aren’t a lot of authors that make me laugh out loud, but one who does is Bill Bryson. His travel books are especially hilarious. I’m especially fond of Neither Here Nor There, although any of his books is bound to produce a giggle or guffaw.

You don’t have to be a Minnesotan to find the Pretty Good Joke Book from Prairie Home Companion pretty darn funny.

* Meet Annette Goodheart. The first laughter therapist I ever heard of was Dr. Goodheart whose adult ed classes in her hometown of Santa Barbara had long waiting lists.

Dr. Goodheart calls laughter ‘Portable Therapy’ and points out that its benefits include: strengthens your immune system, helps you think more clearly, replenishes creativity, releases emotional pain, and it’s free.

See for yourself at teehee.com and laughtercoach.com.

* Join a Laughing Club. The movement started by The Laughing Clubs of India is spreading throughout the world. You may have a local branch or you might want to start one yourself.

The concept is simple: get a group together and laugh for half an hour first thing in the morning. They claim all sorts of amazing cures among their members.

Or let John Cleese show you the benefits of Laughter Yoga on this video.

Don’t ever forget that laughter is a medicine that doesn’t require a prescription. Dose frequently. It’s good for you and equally good for your business.