For those times you just say "Fuck it! I'm going to be happy!"
Here's my personal list of 30 feel good, dance around, sing along songs that will get you in a good mood in no time. There's something for everyone: 90's pop with Britney Spears, feel good classics with Whitney Houston and Hall & Oates, some current stuff and a few surprises and randoms thrown in. Enjoy! And feel good about yourself!