No: one of the most important words in business and I’ll tell you why.
It’s late Friday evening. You’ve got 10 projects running, 4 reports to do for Monday morning, a packed weekend, and a client calls with a last minute job to deliver on Monday. What do you do?
I would say NO. Why? I need to sleep at some point, and if I don’t, my clients’ businesses will still be running and I would be six feet under, figuratively or otherwise. Stretching yourself thin reduces the quality of your work, and in the long term, it might cost you some jobs.
But, wouldn’t saying no cost you the client? Not necessarily. If it does, that client was never loyal to begin with and they’re not worthy of your quality of work. A loyal client with whom you have a great relationship with will understand that you really cannot do any more at that moment.