How can I change the attitude of my brother?

Lately, I am emotionally exhausted from what happened t our family, I can’t control my emotion. I always nag my brother about his family, I know I am not qualified to nag him because I am his little sister. But I notice that he didn’t care about his family. I feel pity for my nephew’s and niece’s situation. They are the one who is most affected by his attitude toward them. He always went home drunk. I don’t want him to continue like this. I want him to change his life for the better and for his family.
How can I change the attitude of my brother?

It is beautiful how you think of nephew and niece. Just as it is not easy for us to change ourselves, it seems more difficult to change others. I think the best way is to ask God change him through prayer.