We must walk consciously only part way toward our goal, and then leap in the dark to our success.

Planning carries you a real distance and then stops carrying you. There is a stretch near the end that no amount of preparation covers, where the information you want simply is not available yet and the only way to get it is to commit. Treating that gap as a sign you have not prepared enough keeps you circling the same ground. The leap is not recklessness; it is the part of the work that cannot be done in advance.

Look at the project you keep researching and ask whether more study would actually change the decision. If it would not, set a date and act on what you have.