I don't want the best for some people in my life
What did they do to make you that mad?
My father is a strict man and I'm going to do my best to avoid him.
You shouldn't wish ill on your dad. He may be strict, but he's still your dad.
You don't understand the situation. He runs a business but I'm a lazy piece of shit.
Your dad is probably just trying to get you motivated, that is not a good reason to be upset with him. You should not wish ill on others, it is not a kind gesture.