Since I mostly communicate in Dutch when in meatspace, I find myself rarely using terms directly from Less Wrong (because good translations don't always come to mind). Of course, this isn't exactly a lifehack, since you wouldn't expect most people to move to a different language zone for a minor benefit.
Several weeks ago I wrote a heavily upvoted post called Don't Be Afraid of Asking Personally Important Questions on LessWrong. I thought it would only be due diligence if I tried to track users on LessWrong who have received advice on this site and it's backfired. In other words, to avoid bias in the record, we might notice what LessWrong as a community is bad at giving advice about. So, I'm seeking feedback. If you have anecdotes or data of how a plan or advice directly from LessWrong backfired, failed, or didn't lead to satisfaction, please share below.