While trading and investing in the market become a piece of cake for those pros in the market, but everything in learning takes time. The process may be hard and tough, but the end outcome that awaits is mostly smooth and sweet.
His emotion will improve thru time if he really wants to continue on this path.
But if not, he will continuously incur losses and soon enough, he will curse this activity for failing him.
Patience is needed as you can't acquire strategies, skills, tricks in a short period of time.
It would take years and years of experience before you will be comfortable in engaging to this activity and finally see the fruit of your sacrifices.
Most are going into this realm, for the mere thought of earning quick profits. Hence, the disappointment.