A good friend of mine has ADHD and BPD. He always tends to be very negative and sends me long reams of texts about how the world is against him, he wishes he was dead, and pictures of his self harm. I'm really struggling to support him, he can occasionally be caring but most of the time it is a self obsessed rant about how the world is against him. I've asked him to give me space as I'm dealing with a lot myself but he only gives me a day or so. How do I support his MH and protect my own, because I'm really struggling with his negativity