Yes, it's very important to know what works for you. For some, they prefer trading altcoins, because that is where you are guarantee quick return, but the inherent risk is unimaginable.
But, on the long run, it is better to have investment that can grow overtime and not gamble with your funds on altcoins.
I aim to add assets from the top 50 to my portfolio as they have potential for long-term profit. Although returns may be lower than on altcoins, it is a more secure option.