They say procrastination is the thief of time (i've always loved that phrase) and they are probably right. Most of us always look at the surf when we get to the beach (despite often having spent a fair amount of time checking a variety of webcams beforehand) but i think sometimes you can look too long. Especially if it is small or cold or massive or onshore, too much time looking can just allow that element of doubt to creep in, is it rideable? is it too big a paddle? am i feeling a bit tired? Usually you are actually better off just changing and going in anyway, if you're like me you will rarely regret it. Take this pair for example, watching a succession of (admittedly occasional) very loggable sets come through before going home again.
The next few days were flat. Moral of the story, make the most of what you've got and never drive away from clean waves without getting wet first!