Even when your trading logic is solid, and based on watching other successful people, following the logic is the hardest part. It's simply not that easy, emotions get in the way.
Being emotional is not a good thing in trading but we should trade with good senses and overcome greed in trading. We decide to trade then will have to follow the rules as well. We saw so many successful people in the trading journey but we cant trust them all just make proper research while trusting any trading person even if he is the most successful trader but trade only with your own knowledge.
Being creed and emotional in trading are not good once you enter in trading you should over come that to get a good profit. Manu traders are emotional once they see there holdings that drop the price. And many are become creed when they feel that they are lose big and they want to overcome this. Own knowledge is very important to trader.