Image Source I'm not too fond of giving people financial advice.. I just don't wanna be the one to blame if it goes bad for them or when they fail to analyse the risks or spread the risk properly.. there is alot of people who put way too many on one market.. I don't bet on one horse, maybe i have like 2-3% of my portfolio which I risk to trade for profit.. I always partially close my positions whenever I'm in profit.. alot of people FOMO when their coin pumps and can't sell because they think it's gonna keep pumping forever.. in reality most of the time you can sell some during the pumps and buy it back at a better price after if you wait long enough... selling tops of the markets is extremely hard, nobody knows when the market is going to turn around, unless it's extremely manipulated.
I get that the majority of people buy during the high points by the nature of how that works. Its rough to watch your investment on paper turn red months after you get in. The thing I have learned is to find projects you believe in, invest what you are comfortable with, and ignore short term price swings (short term being less than a couple years), and focus more on what is happening with the project than the price.
While it feels rough to see your investment red, that feeling goes away when the next cycle hits and you can no longer see the previous spike on the chart. Look at Bitcoin and the mt gox $1200 spike that we looked at for years. Looks like a flat line now.