Okay. It may be because I'm tired and grumpy, but that has got to be one of the most inane pieces of advice I've ever read. Jesus wept. I can think of a hundred different events I generally would like to attend, but not if they would suddenly be tomorrow. That "advice" pretty much prohibits everything that would take the tiniest bit of preparation to achieve. I would love to perform in a musical or visit Antarctica or even just attend a friends wedding or an awards ceremony or my own graduation, but if you sprung any of those on me tomorrow I would not be happy. All of those require planning and preparation, and I bloody well wouldn't want to attend any of those without the chance to do just that. Hey, come defend your thesis tomorrow! NO. If a person is so tractable and easily led astray that they cannot say "no" to invitations and apparently doesn't have the perseverance to actually prepare for those occasions they have agreed to, they might try growing a goddamn spine instead. Aaarggh.