Always take the time to reward yourself...just because. Normally we save this pleasure for either a birthday, promotion, etc., but it is mandatory that you reward yourself as much as possible.
Normally, I will take myself to a movie, buy myself some flowers from the guy on the corner, take myself to a museum, or a great lunch. Lunch is my favorite reward because I can enjoy an establishment I wouldn't normally go to, and most importantly, lunch is cheaper! I can get the dinner meal for 1/2 off at lunch. I will take this moment to recommend the Filet Mignon from Flemings :)
Rewarding yourself makes you feel good about yourself and gives you the opportunity to network with new people. When you fly solo, you can indulge in a drink, that will most surely wear off by the time you have finished eating. Taking time out for yourself is definitely a reward for busy single moms. So while you're planning your next off day, this would be categorized as a personal holiday.
As always, stay true to yourself and love yourself...why??? Who can love you better than YOU?!