I understand that we never know about the right portion size, but by having a plan and being realistic I think you should have a plan about when is the best time for you to stop and secure profits.
Actually on the other hand it is okay to apply greed as long as we are able to accept the fact of regret, but in most cases the majority of them always find it difficult to really be open-minded, so it is better to be grateful for any amount of profit as a form of appreciation for the efforts we have made in analyzing the market.
However, it ends up being a loss because we do not realize that we were too greedy and went too overboard with what we should be doing, which causes us to lose a lot more than what we should be earning.
I believe that it will get to a point where we will be doing fine, without any of these issues, we just need time to fix out mentality about it. Greed when it's done a lot is a bad thing, but greed when it's done in a sensible way is not that bad and could be a great thing to do, I believe that we can make that better. We should consider this as a good thing, we can't really assume that it will be that great or terrible, it won't be that simple and we should be considering this as something that will take a while and can't really be done easily.