I love being busy with work. It's a luxury a lot of writers don't have. A lot of my writer friends tend to go in peaks and valleys. I have peaks and valleyes, too, but it doesn't seem like my peaks are too high, my valleys too low.
Because I am never to busy to market. I might be too busy to update my blog or write personal emails, but I am never too busy to take a half hour, or an hour, or ten minutes out of each day to send off a letter of introduction or a letter of interest for a job.
This is an uncertain business. You feel like you have a good regular client, but changes in editors, editorial scope, advertising, budgets can bring that relationship to an end. Or the magazine folds. Or you feel the need to stretch your wings. Bottom line is what was certain last month is not certain this month, so a good freelancer prepares for that.
I am lucky to have really great clients who supply steady work, but I know that can change in the blink of an eye. It's part of my job to be prepared for that change.