Honestly, controlling greed and emotions is the most difficult thing. Most traders trade just fine but they get stuck in the trading world because they can't control their greed and emotions.
Indeed, it is not easy to control our greed and emotions. It's easier said than done, so I'm really skeptical of anyone who says they can control their greed.
In my opinion, you should trade with your own hard-earned money. In this way, you won't lose as much as you would if you lost borrowed money. So first start trading with your own money to control your emotions.
I doubt your method and even believe it will bring more risks.
What if you use your hard earned money to trade and lose it all? Trading with money you can't afford to lose won't help you control your greed better, on the contrary, it can lead to a dead end in your life. That is why people often advise each other to only use the amount of money we can afford to lose to invest, especially with risky and unpredictable markets like crypto and trading.