I was Christmas shopping at The Grove, an outdoor shopping mall in Los Angeles recently, enjoying the warm weather, when something amazing happened.

It started snowing.

As adults smiled and kids screamed with delight, I looked up to see that the owners of this outdoor mall had installed snow machines that sent down crisp, light snow on the hour.

It was magical.

It got me thinking how important it is to inject surprises in our dealings with our customers, employees and even in our personal relationships.

Have your relations with others got too predictable?

Do people always know what they are going to get when they interact with you?

Consistency is great, but a level above is consistency with the occasional pleasant surprise here and there.

Like delivering a job early. Sending a handwritten Thank You card or gift. Taking your partner out some place crazy.

Humans love nice surprises. If every month you look for ways to do the unexpected for those around you, you'll be surprised by what an impact it makes.

This article is written by Siimon Reynolds, teacher at The Fortune Institute