From personal experience, without this discipline, the play money can suck in your whole port and get you stuck in a loser while missing out on the mega-rally. This approach of diversification is very important at this time in history as we are about to see the floodgates of corporate investment into blockchain technology that will drive prices much higher in a short period. My target is $1trillion total cryptos within 1 to 3 years. aka HODL as they say!