I wouldn't term it as a good or bad advice because of a simple reason - destiny! I strongly believe that destiny drives us all and if destiny says that I will die as a billionaire, I will become one! We as a commoner, don't know how and when a coin will reach its ATH and we wouldn't know when to sell it off to book profit!

Similarly, while many people sold off their holdings back in later 2017 and brought home hard cold cash, there were another group of people who entered the market and suffered major financial loss due to their decision!

So it's not a clever thing to look back at past and regret for what I haven't done! It's always better to look forward and decide what I can achieve! Crypto market is one of the prime examples!