1. Do not panic when market value is decreasing
2. Do not even think of selling you bitcoin or ethereum
3. Do not think about it to much, why? because it will rise like before it got really high and for that a man got a car ,a luxury to point that out. So maybe like him you will get rich BUT in a long term situation
Edit: additional. So, I suggest you go and hold next thing you know your might get rich
FOR INVESTING OR TRADING:
4. DO not invest really high that you can lose (DON'T INVEST WHAT YOU MAY LOSE)
5. study the past history of market value ( when holding or investing and even trading)
1. Not only panic,but never sell at a loss.
2. They can sell, when required.
3. Humans tend to think a lot and nothing can stop them. Just advice them and tell them not to be stupid.
4. Because of that, they borrow loans to invest.
5. Tell them to learn basic economics first, market demand and supply.