A tip is to get them to stop thinking of Bitcoin as a short-term investment or a quick way to get rich.
If you have any suggestions on how that's possible, feel free to share. All of my friends that jumped on the gravy train for the 2021 run are already out of crypto now. They all bought shitcoins trying to get rich, and now think crypto is a scam. Some of the survivors from the 2017 bubble that I know have started coming around to a Bitcoin only theme. I have found that no matter what I say though, no new entrants want to buy Bitcoin. They struggle to find a use case for themselves and don't want to just buy and hope to sell for more later, because the greater fool theory isn't value... I wish Bitcoin had the "killer app" instead of a promise the price will rise while telling you not to spend it.