Success in trading comes through consistency and controlling risk and surviving in the long term. So, it is more important to make small profits and protect capital than to take risks for big profits. Because to win, you have to survive. In addition, an exit plan is important because many people spend time looking for good entries. But they do not have any plan for when to exit. Due to which, falling leads to big losses. So, to survive, you have to follow a method that will bring positive results in the long term. And the strategy will be effective in the long term only when risk management and planning are taken correctly.
Trading is all about surviving. We can only continue trading if we have enough funds left. Most of the traders will not consider this and they would risk investing all their money in a single trade. This is the biggest mistake one can make. I usually prefer using only 2% of my total portfolio amount for a single trade. That still gives me room to take another trade if I find those opportunities. Even if I lose, 2% is all that's at stake here. I can still recover these 2% by using the remaining 98% of my portfolio.
Many people will open a large position and would risk all their money. If in case they lose, they have to take a step back at least until they get hands on more funds. We all, mostly new traders should avoid this mistake at all costs.