I've just started this, and it's hard. It's hard to "find" the things you like to do - alone.
Actually, every passing day makes it a bit easier to find things to do alone.
Something that has really helped me is http://www.meetup.com. I regularly do searches for things going on in my area, and I've met a lot of great people and had a lot of fun doing things rather spontaneously.
Being alone is something we choose for ourselves. There's a world of people to meet and things to do - we just have to look a little harder than we're used to. :-)
Good luck with it. Believe me - I know how hard this is.
-- Mike
Mike is Hurtin': Me: 32 W: 32 No kids M: 8 years, T: 10 years Bomb: ILYBINILWY: 9/11/07 Seperated: 10/13/07
W still states OM is just a friend, and the kiss on 06/2007 was a one-time thing.