Fuck Reason

"I like people who think of reasons to have sex, rather than reasons not to."
In The Chemical Buddha's vast experience of trolling seedy bars for someone who might actually want to have sex with him, he found there were two types of people in the world: those who think of reasons to do something and those who think of reason not to. And there are a lot more 'not to' people than 'reasons to' people. Especially when you consider that even people who don't like to do things are searching for people to do things with. TCB reasoned this was because the easiest word in the world was 'no.' And the hardest word was 'yes.’' Unless you run into one of those people who say 'yes' to everything but don’t show up for anything. To The Chemical Buddha, these were worse than people who just said no all the time.
Do you say 'yes' or 'no' more often?
Do you over commit? If so, what do you do when you have too much to do?