But I did not say that I buy only new altcoins. On the contrary, I try to build my portfolio from altcoins that can show good growth and are reliable. Besides, you can make a lot of money with this strategy. You just need to wait for growth and not sell too early. For example, those who bought ETH at 80 dollars in 18-19 could get out too early and sell it at 1000-1500 dollars and its price went up to 4800 dollars.
As for me, at first, who knew it will grow like that, and at second, you need to have a very strong nerves and the power of will not to sell everything when it just starts growing. I'm sure there were many people selling Bitcoin when it reached 100$. But no one could even imagine it will stuck on $20k one day 
Holding for very long time is not easy because market is not goings on one side. It has to pass many stages before reaching all time high. There will be very less people who hold from start till now. Many time Market crash comes and as you said , passion is required for holding tight. I lost many opportunities due to lack of passion. I hold some low cap coin for some months but sold in depression and after that some coins rised 10x in just 3 days.
We should have to prepare a selling plane and depends upon everyone thought how much will be enough for me to book profit. when we get desires profit then we should not think about profit like Bitcoin. sometimes one coins gives us very good profit but due to greedy of more benefits we miss opportunity to sell at peak and as a result we sell our coin in loss.
This thread is looking no more active and real discussion about Crypton is missing. Is there anybody who stills mining CRP?
I don't see the point of mining. It is much easier for me to buy coins on the market. It is always more profitable and much faster than spending time on mining.