But they can also blind us to new possibilities. New ideas and alternative possibilities will come along. This quote from Mae West is a classic call to action. There are times when opportunity knocks, but only stays at the door for a moment. Be prepared to respond quickly.
Fools rush in where angels fear to tread.
Being able to respond quickly is not the same as being foolish. If it's a good idea today, it will likely still be a good idea after a night's sleep and consultation with your trusted advisors. Balance, thoughtfulness and a healthy skepticism are also critical. Assess the probability of success. Just because an opportunity could work out, doesn't mean it will.