My first coin was back in 2011, but I bought for the first time in late 2012. Makes no difference as I didn't hold on to any of it.
My first bitcoin buy was in 2016 september and I'm still regretting about that I did not sell my bitcoins at 20000$ still I believe that it will cross it's ath sometimes and that's why I hold my bitcoins.
This has happened with many people who had entered at high value and thinking that it will continue to rise end up either selling in loss or need to hold til that price is achieved. Greed is something which if not control can case heavy losses at time.
See, there are many kinds of investment strategies but principally if you talk about the general population who don't much technical info in trading will tell you that there is only one strategy.
Buy low sell high.
But that's the easiest one and practice it is impossible for any newcomer to find and identify the neckline in the trading curve.
There is another form of investment popularised by Richard Driehaus -who's considered the father of
momentum investing.
Here, you simply
buy high and sell higher. You have to focus on riding the wave and selling the losses and reinvest the losses in another stock. In traditional investing you'd eventually run out of "other stocks" to invest in, hence the lack of popularity for this strategy, but in crypto you have a gamut of choices you can invest in where the money will almost definitely rise .. eventually.
You just have to have balls of steel.