Late 2017 and early 2018 i was holding lots of coins and tokens from the ico's in that some i really trusted with solution and team (not only me most of crypto community trusted). Now this coins or token became nothing .
There's a problem with timing of accumulating a coin, you accumulated during peak which is the timing for selling.
If you have followed a simple principle which is to "Buy at dip and sell at peak" you might have not bought at that time and you'll wait until the market dump due to correction, it was all FOMO that time that's why the price went crazy, not only in bitcoin but most altcoins as well, in fact a lot of people make good profit on altcoins as they are the most profitable that time.
But some projects i entered to sell for small margin profit these projects given profit . So holding token or coin for long term is meaningless.
Like I said, if you were able to do it at a good timing, you'll not regret because holding is still a good strategy as long as you hold a legit coins that has a great potential to succeed in the future.
We should know about this.
https://cointelegraph.com/news/btc-maximalists-are-right-that-95-of-crypto-is-a-scam-says-emin-gun-sirer