The short answer to this question is “Yes.” Marketing your writing business should be an ongoing activity. Many freelancers have peaks and valleys in their work load. It goes with the territory.
If you want to keep the work coming in, you should be constantly doing activities that will grow your business. Even if you are at the point where your time is completely booked and you couldn’t possibly squeeze one more thing in, do it anyway. Find a few minutes to check out job boards, the job leads we post here at FWJ, to make a couple of cold calls, or approach a potential client by e-mail.
Don’t worry about how you are going to fit the next gig into your schedule. You haven’t got it yet. It may take time to hear back from your job searching efforts, and chances are that you will apply for many more gigs than you actually get. You can always discuss deadlines when you are negotiating fees with the client.
Part of being a freelancer is juggling the work we have in front of us with being on the lookout for our next project. Do you look for work constantly, or do you back off from these activities when you have a lot of work do do?