My best friend is mad at me?

we ve been best friends since the third grade! dani says i make everything about me ;( she knows that is not true, i try to invite her over sometimes too and i ask her hows it going. a person has to like there self before they can like anyone else right? i want her back as a friend how do i apologize? she even told me to leave her alone when we were texing and said she might not want to be friends with me anymore. ;( i dont know what to do. i care about all of my friends i am really not self centered