Some Dr. Phil reality here....

WHY do you even allow him to talk to you like that? The minute he starts to lay the guilt on you or cut you down.... tell him you don't have time for that kind of shi*, life is to short so go spread his doom and gloom somewhere else! Then politely say "GOODBYE" and hang up!... That is unless you NEED to have someone make you feel like crud and just need a reason to cry....

Your brother? SO WHAT! Who needs someone who can make you feel that way no matter what relation he is to you? The worst he can do is stop talking to you and sounds like that would be a blessing.

I say all this because I use to date a guy like him and found his cut downs amusing, his critizem of my friends was downright funny and his attempts to drag my happy mood down to his sourness was a game to me. It use to drive him nuts that no matter what he said to ruin my day, I was so darn cheerful and kept telling him how much HE had to be thankful for and what a simply beautiful day I was having... I dated him until I got bored of his little game of "doom and gloom", then I dumped him.

Your brother sounds as toxic as the guy I use to date, I got rid of that guy.... It's your life and your brother... Do you need him that bad?

(Take this as I mean it... I am not trying to be mean or hateful or bust up a happy family... I just don't understand why you put up with this... )