OK, second attempt:
Always remember that a company of weird people costs you your social capital. Make an estimate of costs and benefits. Multiply the costs by 10 to compensate for bias. Check again whether the benefits are real or imaginary, or could be obtained cheaper otherwise.
Note: The number 10 probably feels to big. For most weird people, the correct multiplier would be 2 or 3. But a few of them are black swans.
Always remember that a company of weird people costs you your social capital.
Not if the people in my social circle are themselves weird.
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.