Every human is born to achieve something in this world. The goal of each person aren't the same. So, when you have the dream of becoming a singer, you will keep practicing until your voice is wonderful. When your friends want to be a football player, your friends will continue to practice until successfully entered the top clubs.
All of that, comes from hard work and keep practicing. When you practice, you know your potential and the drawbacks. When you practice volleyball, you practice cooperation. You know your friend's abilities very well. but when you get a stronger opponent, your team defeated and you realize your friend's shortcomings, then you get angry about it. Listen, you shouldn't be angry. All you have to do is discuss the problem, develop better tactics and be consistent in the next game.
So, life in other fields will also be the same. You build what you want then something unexpected happened. Then, you think to look for another solution. Sometimes, alternative solution is better than what you thought at the beginning. And for the last, you're consistent with what you do. From the results of consistency, you get your life balance and keep improving, because you already managed to master time and skills.
photo sources : https://unsplash.com/photos/g5RJByC_WQc