Meeting new people who enjoy you, and who you enjoy is step number one. There's a big hole for you right now that W used to fill. You need to start filling that gap in other ways and stop hoping that W will jump back in.
How do you do that? Meetup.com is a great resource, there are groups for virtually everything, and if there isn't one you're looking for, you can create a new one. It's great because it's non-threatening and non-committal.
Since the bomb, I have joined meetups for motorcycle riding, bicycle riding, and playing pinball. Gets me out doing things I enjoy, and meeting new people. Unlike joining a sports team or taking a class, if you can't show up any given time it doesn't really matter.
There are also meetups for single 30-somethings where you can just go out and go hiking with a mixed group, play pool, whatever, without the pressure of dating.
I think anything like that where you can join a group of people who are there explicitly to make new friends is going to benefit you. It's hard stepping into a new group where friendships are already established and you're the new person. Meetup is about breaking that down.
Accuray
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015