Newly single, as well. Wish I had an answer. Maybe get a dog, or cat? Spend extra time at Barnes and Noble, looking for someone that is looking at something you are interested in, and NOT wearing a ring? Dating sites just, well, NEVER had a good date from them!! Chat with someone on GAG, and maybe you are close enough to meet?
It's time to know yourself again, and pay attention to you. Go at your own pace. Join clubs or befriend people so that you won't settle into loneliness later on. Pick up a new hobby, travel, it's time step out of your comfort zone a little and explore.