Edit: If it's less than your target, you'll automatically be spending more time finding new work. Use the extra time to figure out how to make yourself more valuable to your customers to bring in more work. As a last resort, lower your rates (maybe the market has changed?).
Realistically success as a freelancer is down to how well you sell. You may have the best portfolio but if you cannot connect with clients you are going to lose out on work.
In the end I focused on improving the way I sold myself to clients and things improved drastically. My portfolio was fairly average but I did well by simply instilling confidence in clients that they were in the right hands and a project would run smoothly with me charge.
Also, avoid round numbers: $110 says "this is my market rate" $100 says "I am rounding up, let's negotiate"
The two keys to making this work are: 1) always be over delivering and learning and 2) keep utilization up, when your time is scarce you have real credible negotiating power on rates.