That's how I was originally, so I know how overwhelming it can be.
Now that I am actually seeing my bitcoin and profit skyrocket, I don't even think twice about acting on impulse.
Granted I spend a lot of time on the computer replacing my buy and sell orders. Who cares though when I'm making hundreds or thousands every few hours?
It is your good luck then. For some nervous types it is actually beyond their mental abilities. They usually can withstand losses (though traders wisdom says to cut your losses short), but close too early without taking the profits they might otherwise gain (which in itself is very demanding on your psyche)...