For instance, do you have clients who are never satisfied with your products or services, no matter how hard you try? Or do some of your clients think the rules don't apply to them? Are they consistently late paying bills? Do they demand more than their fair share of attention or expect round-the-clock care? Maybe some clients are simply taking up too much of your time to be worthwhile.

If any of this sounds familiar to you, it might be time to say goodbye. Of course, you should never deliberately offend a client. Break the relationship off gently, but never leave a client in the lurch. Remember, what comes around goes around.

Excerpted fromGet Smart: 365 Tips To Boost Your Entrepreneurial IQ