HODL Your Private Keys to Avoid Worthless Investments

If you buy any worth-crypto (BTC, ETH, LTC, ZEC), which has some value, stick with it. Just forget it and let it live its own life. Because it contains everything you need for a successful life. Share it, keep it and leave it. Of course, you can not forget your private keys or passphrases. That would be a worthless investment. That's what I am trying to say is simple. It is very hard to keep calm and watch red.