I was just looking at the coinmarketcap table since 2013, I was surprised in what I saw, many coins topping the charts then are now almost non-existent, we need to be careful of the kind of coins we hodl especially for long term. Most of these projects just die after the initial hype.
You always need to know when to sell and for what purpose , and then with any coin you can stay in the eternal investor , as the market is very strong and fast changing , and coins in the top as well.