4) And lastly, Don't Invest more than you can afford to loose.
I think that the 4th advice was a good advice in 2011-2017. Today Bitcoin's price is very high, the market cap is already saturated and by investing a small amount of money, you are going nowhere because a tiny profit won't do much to a tiny budget. Today there are many reasons to be confident and invest more than you can afford to lose. One of the reason is the fact that governments, states and companies are creating Bitcoin strategic reserves and they are investing into it.
Nothing has changed since then, and this principle applies equally to everything where you invest your money. If you invest more than you can afford to lose, then in the event of a negative scenario, your financial stability will collapse and you will become bankrupt. There is no 100% safe investment.
I agree with you and I've got your point but I think that many things have changed since then and let me explain it to you. Today, governments are investing into Bitcoin, Trump might create a US Bitcoin strategic reserve. If the US does that, then many countries will follow that step and even without US doing that, lots of wealthy countries will do it. Websites countries, commercial banks also plan to create and hold Bitcoin reserves. These facts change everything. To my mind, these facts mean that Bitcoin is a very safe asset to invest. Lots of money will flow into Bitcoin's market cap.
Changes always works, but peoples never try to understand ground realities and mostly are having regret after facing consequences in my early days I was furious and never try to understand few points which were taught me but now feeling bad because having things out of control even after trying hard it's not easily coming back.
Trump is doing anything about bitcoin or not, but It's going to be had good impact due to many good points which are not opening world understanding and many countries are talking about this which is the biggest win for this now its matter of time all will be regret why they have no this sometime back now It's going to be had another good level.
Few countries are already bringing soft policies which will works then adoption could not problem because bitcoin will have own way.