Derek Sivers makes the case that it’s better to keep your goals to yourself, rather than declaring them publicly. Why? In four separate tests, people who talked about their intentions were less likely to make them happen. Talking about an intention gives people a “premature sense of completeness.”
In the tests, people wrote down a personal goal. Half of them announced their commitment, while the other half didn’t. They were given 45 minutes to work toward their goal, but they were told they could stop whenever they wished.
The non-announcers worked the full 45 minutes. The announcers stopped after 33 minutes, on average, feeling they were close enough to accomplishing their goal.