Is it okay that I really hate my mum
What is your reason for hating your mum?
She spoiled me when I was young.
I understand that your mum spoiled you, but you should try and get along with her. She was trying to do what she thought was best for you.
I decided to be an ass to her so she can get used to it.
Being mean to your mother for no real reason probably makes her feel terrible. Do you really want your mother to feel that way? You should be kind to her, and try not to make her feel bad.