Greed would be on no. 1 spot. Next,?

 Emotions yet this one would really be one of the most common enemy when you do trade because you cant easily fight when your emotions are already involved.

Yes, your experienced one but doesnt mean that you wont really be getting affected by this but somewhat due to knowledge into things you are already aware

on what would be your next move but it cant really be avoided that breaking out your own plan or goal or havent been followed just because you decide for another
route or path.

It depends though because some might really be a beneficial one but most of the time those immediate change of plans are caused of panic or being too worried.