You've made a very important point, it would be a waste of time and heartbreaking to invest for years then lose what we've been holding for years to scammers cause of our carefreeness or failure to secure our portfolio, the security of one's portfolio is as important as holding for long-term, that's another area newbies should concentrate on as well as learning to hold Bitcoin for a longer period.
Also, owning an emergency fund shouldn't be overlooked, to maintain a healthy portfolio it's very important too, emergency situations are something that's not planned, they can happen anytime which is why investors need to be very ready for a worst case scenario and there's no other way to be prepared than having the emergency fund intact.
Security is a mandatory thing to look out, I was away for a long time, but I did not stopped learning, and the most important learning was, we should never tell anyone we are holding Bitcoins, that's another thing if some scammer somehow know we are holding btc and they try to phish us we can still save us by not doing anything stupid but we can face security threats from our loved ones and people around us so never tell anyone how much btc we have, or my brother have and even my father has.
https://x.com/BitcoinNewsCom/status/1956747783530037670This news is enough to understand the sensitivity of this situation, if we tell anyone, the word will spread out like fire and it will reach to the ears of some bad people and they can do bad things to you, or anyone near you who you love and it can become a problem. Never share anyone about the bitcoin investment.