Dear square participants this is dumb advice, no one should follow it.
fornthe following reasons:
1. No matter how much you start with: either $1 or $1M, you will never make any money if you have a very poor mindset and bad trading skill
2. It is not BTC or ETH or any specific coin that will make you rich, The key is your trading skills. it is what you know about BTC Or ETH that will take you there.
You may "blow" by buying a bear market and waiting for long to sell high in a particular coin. but you will never actually "Grow rich".
3. waiting to make 50% profit as stated in the advice as a take profit strategy is a very silly approach. You will never follow it when the markets suddenly give you 80% . Also if the markets give you 45%, as you wait for a 50% before closing the trade and Oops there you are , price goes down, reducing your 45% to 15% ,...hahaha, then you have serious problem in your mind.
Learn how to trade well. Horn your strategy, learn Technical Analysis before committing your hard earned money, even if it is 50cents, don't gamble.