Greediness will always lead us to failure, we need to be contented with a little profit because what we like to happen here is we will be able to make consistent profit even if it is small to accumulate a big amount, just learn to impose patience to be successful in trading.
Exactly. This is just like Gambling where you get greedy spending lots of money into a casino, and then you could end up losing more than what you have initially invested. Speaking of which, trading is very similar to gambling where you invest your money into highly volatile assets such as crypto currencies where its price movement is unpreditable, and thus you can earn profit or lose more than what you have invested. To play safe, I'd say you just invest the minimum amount possible in order to minimize the risks. Just my opinion.