No matter how dismal a date may seem, it's always polite to stick it out until the end. You never know – he/she might have hot friends or you guys can remain friends! Not everything is going to work out, but you can have a good time anyways.
A first or second date is not the time to discuss your cheating ex-boyfriend, your zany mother, or your psychotic boss. You don't have to whitewash your life, but you can be honest and true without plunging into the darkest depths of your soul.
Never put your date on the spot about anything - keep it casual and fun. The point is to make them feel comfortable, not put to a test.
If the thought of coming up with several hours of conversation with someone gives you hives, suggest a sporty activity like bowling or playing pool. If you're being active you won't feel the pressure to keep up a non-stop conversation.
If there's a movie that you've been dying to see or a new restaurant that you're curious to try, a date is a great excuse to get yourself there. If you do something you wanted to do anyway, then you can't lose. And it will make you a better date because you're having fun.
Many mishaps happen on dates, but you'll make a far better impression if you simply roll with the punches. Being able to laugh at yourself is a great quality - sometimes we all need to breathe and not take ourselves too seriously.