> were 33% more likely to achieve them than those that merely formulated goals.

I've heard this before and I've also heard the exact opposite. That telling other people your goals reduces the chances of finishing them. The theory I remember (I google but was unable to find a good link) was that telling someone a goal feels 60% as good as actually doing the goal itself. So it is easier to just tell everyone your goals and then invent new goals.

I'm not trying to contradict Alex Maccaw. I've just noticed this dichotomy before and been curious how people reconcile the two theories.

Has anyone else noticed these two recommendations or know what I'm referring to?