Greed will always leave you dissatisfied because you'll never be able to get everything you desire. Greed never allows you to think you have enough; it always destroys you by making you strive ever harder for more. But fear is a far more likely candidate to be the root of all evil...
It's not appropriate if we're going to be greed in most certain cases with cryptocurrency. If you want to succeed, you should have to be more courageous on every aspects of life specially when you're trading at higher risk. Be brave and face the challenges, because as you desire for much higher or quicker profit you'll turn out greedy.