~snip~
[5]. Don't be greedy:The master of it all.
Greediness can reap you off all your profits already gained from the market when you're trying to gain it all. Be contented with the profit you've got and have plans for profits taking.
This is one the biggest challenge I faced during my early time of trading and even now but it's reduced and controled.
Don't be greedy is one the most crucial in my mind because when I go greedy I can lose it all in a few moments.
It's indeed!
That's why we shouldn't chase our losses and control our greediness. And maybe you forgot to add this in OP, it should also have a stop loss so that you can minimize your losses once there is.
I know it's very easy to say these things but for sure it's hard to do this especially when you forgot your goal. Trading it's always been crucial, we should have these skills, knowledge plus instinct.