Never stop marketing in one way or another. Consistently and regularly do some marketing. Look at how much time you are able to commit to your copywriting business. 20% of your time will be marketing 80% of your time will be devoted to servicing your clients, writing, projects, etc. You need 3-10 good clients that will consistently give you projects to make a great income. Your best marketing is your ability to service and upsell your existing clients.