Sometimes, you just have to put your thoughts aside, ignore any inevitable hesitation, and take a risk. Whether that risk be saying how you feel at any given moment, accepting a dinner invitation from someone that intrigues you, or even signing up for a flying lesson over Niagara Falls, which I actually just did this morning (so excited) — forget your reservations and just do it already. The moment may pass or the opportunity may not present itself again.
If it doesn’t work out, oh well. But at least you’ll be looking back evaluating something you did do, rather than something you didn’t. Stop thinking twice. Instead, allow your life to be dictated by instinctive risks that could quite possibly lead you to some of the most memorable experiences of your life.