Diversification is really important if you want to sustain and make profit from your investment the old saying Do not put all your eggs in one basket is very true, and that is how it should play, you also need to know how to cut losses how to add and research new coins although risky but there are profit to be made on these new coins.
When it comes to investing in different coins and with different strategies, this is the right decision. But with regard to new coins, you need to be much more careful here. Even if there is great confidence in the coin, then you need to invest in it a very small percentage of your deposit. So that in case of failure, losses are minimal.