Thanks to natural selection, the organisms that are fit enough to reproduce before they die are the ones whose genes carry on to the next generation. In the wild, this meant the ability to fend off threats, find food, build and maintain shelter, and demonstrate capability to potential mates. However, since the evolution of humans into civilized society, the biological instincts that evolved to survive up until that point can be detrimental to harmonious living amongst cooperative citizens.
The primary example is the fight-or-flight response. If someone cuts you off in traffic or bumps into you in a crowd, the instinct to get ready to rumble with the offender can creep up. If someone flirts with your spouse or takes your seat, you similarly may wish to assert yourself by getting physical. However, to live in a polite society, the best move is usually to let the person move into your lane, let the bump go, tell the person your spouse is taken, and say that you were sitting there. Not only is fighting possibly going to get you arrested, but it is also poor in the long term for relationships and reputation.
Similarly, the human stress response evolved for combat and danger, focusing your attention on environmental threats and sending blood to the extremities. This is good for the real world, but thought work like test taking can suffer as a result. Again, in civilized society, you will likely take ten tests for every one real-world threat you face, causing stress to be detrimental to your performance rather than beneficial.
So, what do you do given that what works today isn't the same as what worked thousands of years ago even though your biology programs your response? Reprogram your brain to respond in the optimal way in various situations. The first one to work on is your instinct for revenge and reprogram it focus on the most constructive response. Yes, if someone is coming at you with a knife, then a fight-or-flight response will work. But if you need to maintain team cohesion in a football game or avoid a penalty for retaliation, you need to maintain the discipline that keeps you from losing your temper and throwing a punch.
There are other situations you can practice for as well. You might get nervous around the opposite sex and need to train yourself to keep calm in social and dating situations. You might be tempted to focus on fairness and reciprocity but have to be generous or let a slight against you go for your long-term benefit. This is true especially when you have less power in a business situation, as it might be in your economic interest to accept something that, if you were to let your pride get in the way, you wouldn't otherwise take.
That said, there are still areas where biology should be listened to when people get used to ignoring it with the above technique. The biggest one is sleep. Your body needs sleep to function optimally, and you might deprive yourself to complete a project, take care of your family, or party with your friends. But that will cost you in the long term in terms of a negative attitude, worse cognitive performance, and weight gain. This applies to eating nutritious food, getting fresh air, sun, and exercise, and spending time with family and friends. If you let your mind ignore those biological needs, you may end up worse rather than better off.
In short, your biological response may not be aligned with what gets you the best outcome in life. In those situations, make sure to use your better judgment to override any instincts you might have to behave in a way that's socially inappropriate. However, you also have biological drives that are important for your health, so ignore those at your own peril. The best way to move forward in life is to know when your body is telling you something you need to know to live your best life vs. when your body is instinctually trying to keep you alive in a situation where you are not in physical danger. When you know how to respond in those two situations, you can avoid making decisions that you will regret later.