Well, I'd recommend "Last Friends". It's been years since I watched but I remember I cried and could feel for the characters.
I liked "Byakuyako", too. I'm not sure if you will like it, though, because not everyone can feel for the main characters as they're antihero/heroine. They're not really bad, IMO. They have their own qualities and flaws just like every other human being.
I'm not sure about changing your life as it's something only you yourself can do...