It gives me something to look forward to. That way, the self pity doesn't creep in. Try it!
Enjoy your weekend.
I try to force myself out of the house and do something I keep saying I want to do but don't. Like, head over to the museum, or try to find a fun new coffee shop with a good book.
Sometimes, scheduling out your day with activities helps and gives you something to look forward to (otherwise I zone out on my couch eating wheat things).
So, go for a run in the morning if it's nice, or try out a groupon deal to get my nails done, etc.
I like Cat's suggestion of getting wine and reading a book at home in the evening. Sometimes the lonely evenings are the hardest part for me. Most my friends are spending QT in with their SO's and I'm reminded that Im' alone.
I'm also trying to take on some contract work and do more writing. Gives me something to do and focus on for me (something that was hard to do when I was with X).
Look around at your local paper (especially if you have an alternative weekly) and see if there are any concerts or unusual things you might be interested in. I've gone to concerts alone, started talking to other single ladies there and had great nights. There are usually lectures, art exhibits, etc.
Also, just because someone has an SO doesn't mean they don't want to do anything with you. This is something HUGE I had to overcome since XWH was so antisocial and essentially insisted that I spend all my free time with him and without anyone else.
I do a lot of things with my married friends -- sometimes just us ladies, and sometimes there will be 3 or 5 of us (with me the single one.) My BFF told me she really likes it when the three of us go do stuff because she and her husband have been married so long they can get bored with each other but I spice things up :)
Another idea is to check out the local university if you have one. Mine has planetarium shows, drag shows, movies, and tons of other really interesting activities.
I truly believe that there is no excuse for being bored. There are so many events taking place in every medium-sized city -- you just may have to do some work to find them!!!
Married: 11 years, no kids
The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low, and achieving our mark. -Michelangelo
Sometimes I take myself to a move or just go shopping (mostly window) or drive somewhere I never go because it's a bit farther. I go to art shows, gallery openings, walk the beach, etc.
"In life, unlike chess, the game continues after checkmate." - Asimov
"Be patient and tough; someday this pain will be useful to you." - Ovid