Do any of you have a friend that is ALWAYS having problems in their life. (When i say always i mean…

Do any of you have a friend that is ALWAYS having problems in their life. (When i say always i mean damn near daily) And you try to help them as much as possible? But sometimes it overwhelms you and you don't wanna be selfish and say anything because you don't want to make the person feel bad... But sometime you have extremely happy days and you don't wanna deal with their sad stories but at the same time you don't wanna be a bad friend?