If you have a monthly budget and don't have spending money budgeted in for yourself, stop now! You are going to lose your f***king MIND! One thing I have learned from having a monthly budget is that having spending money every week is very important to keeping one's sanity. My wife and I a couple of months ago tried to go a whole month without having any money to spend on ourselves -- we failed within 2 weeks.
So, why did we fail so quickly? I think the reason we failed was the psychology behind the satisfaction of splurging on something for yourself and also the slight endorphin release that happens every time you spend that money. We were depriving our mind of that release which lead to stress building up and eventually to us going crazy and constantly being mad at everything.
Once we discovered the cause behind it that first purchase, let me tell you, was just a nice release! It was like a drug addict taking a hit after 2 weeks. It was so refreshing and satisfying. I immediately went back to my monthly budget and adjusted it to include spending money every week.
Don't make the same mistake my wife and I did. Spending money = Keeping Your Sanity!