3. Be realistic and don't join the FOMO since this could lead up losing your money.
This is true especially on meme coins because most of the time people will join really late because many people already have gotten something from those meme coins, that just makes you losing more money because if you invest late to meme coins then the chance of you getting profit is really low or even zero because the price would be just stabilize and stagnant for a long time.
4. Never believe on people telling you to hold or even buy more they just want their target to get hit and for sure they will dump it without your knowledge so sell first before other do so that you will not end up chasing pumps to gain back your capital.
There are lot of threads on this forum regarding that topic especially the topics around meme coins, might be better to just avoid that.