1. He doesn't have a trading System.
2. He doesn't know the different between trading and investing.
3. He acts on impulse and follow every bit of piece of news. His eyes remain on CNBC in hotel while his girlfriend is talking him something.
4. He doesn't have a trading plan strategy.
5. He let's his losses become bigger. He is more lose averse than risk-averse.
6. He doesn't trade with probability assumptions.
7. He is undisciplined.
8....
