This is an extension of a comment I made that I can't find and also a request for examples. It seems plausible that, when giving advice, many people optimize for deepness or punchiness of the advice rather than for actual practical value. There may be good reasons to do this - e.g. advice that sounds deep or punchy might be more likely to be listened to - but as a corollary, there could be valuable advice that people generally don't give because it doesn't sound deep or punchy. Let's call this boring advice.
An example that's been discussed on LW several times is "make checklists." Checklists are great. We should totally make checklists. But "make checklists" is not a deep or punchy thing to say. Other examples include "google things" and "exercise."
I would like people to use this thread to post other examples of boring advice. If you can, provide evidence and/or a plausible argument that your boring advice actually is useful, but I would prefer that you err on the side of boring but not necessarily useful in the name of more thoroughly searching a plausibly under-searched part of advicespace.
Upvotes on advice posted in this thread should be based on your estimate of the usefulness of the advice; in particular, please do not vote up advice just because it sounds deep or punchy.
After you get a haircut you like, ask your stylist to describe what ey did/what the style is, ideally in the vocabulary of the trade. For instance, my current style includes a face frame, long layers, and some other style words.
Write it down, stick the note in your wallet, forget about it until the next haircut. You get the benefit of repeating instructions as they would be described from one hairstylist to another and are less likely to fall victim to terrible cuts or the poor memory of your regular stylist.
As someone who is less productive with a bad haircut (I have to pin unruly lengths out of my eyes, etc), this has saved me time and confusion.
After you get a haircut you like, get a friend to take a picture of you from all four sides (and top, I suppose) with your phone. In future haircuts, show it to the stylist.