By learning more about trading, we can test one by one of the methods that we know so we can see which method that may work in the current situation so we can use that to trade. We will have a chance to reduces the losing money in trading because we can analyze better and always trying to prevent the mistake.
Learning and practice are different and all traders have to start with learning, then practicing with demo trades, then actual trades. It's never expected to be a successful trader with profitable trading after starting. A trader will have to go through many different market phases, bull market vs bear market and a most stressful and boring phase in between bear market and bull market.
To avoid losing money or worse losing all money after several trades, the vital principle is using very small part of capital for trading. Let's afford to split that small capital part to different smaller pieces that will be used to start different trading rounds. Lose one piece, you can restart with other pieces.
Becoming a successful trader will need many things to learned and that will need time before he can trade better. When he can understand the point of his lesson and can practice without have a problem, he will see that his skill improves better but he doesn't have to stop from learning more because the market will always moves. If a trader feels satisfy with his skill and don't want to learns more about trading, his skills, experience, and other things will not improves as before because he can not get a new thing from trading. That will make him feel difficult to trade because he must adapt with the current situation that happen to the market.
Focus is indeed necessary and important when we analyze so we can know the time to enter the market.
Know when to enter the market and have clear idea on when to exit the market. The exit time does not need to be profitable but it is when risk starts to become bigger, and you have to exit the market to defend your capital.
Enter and exit the market is something that we must know so we can act in the right time. Many traders still feels greed to takes more profit even if they already make that profit. When they know when to exit the market, they can stop trading and takes profit and when the market situation change, they can use stop loss feature or just stops trading and exit the market. They will not have a difficulty to analyze the market because they always learning more about trading which help them to know what they needs to do.