If I get a pitbull, aside from being beautiful, they are strong powerful dogs that are notoriously more aggressive than my original favorite golden retrievers. They need an emotionally strong and powerful person to deal with them. If you are emotionally weak, they will step all over you.
Same goes for the kid you have. If you are emotionally weak, your kid can step all over you. There is something to be said to nature deciding the general character of a person, but for the most part it is nurture. Some kids are naturally wild (like I was) and some are calm. How you decide to deal with their natural character is what is important.
If your kid is wild, and you are by nature calm and hippie-like, you will have to learn how to work with your child’s personality type. The same goes for an opposite situation. An energetic, animated, outgoing parent can end up overpowering their naturally calm child.
Just don’t mistake a child’s personality type for how you are treating him. Spoiled kids are prone to yell, fight, talk back, and rebel. Kids living with too many rules are prone to do the same, or just lay down and surrender.