I'm not trying to be pedantic on purpose or anything WRT the previous replies, but the OP was asking how to deal with such a loved one.

Not how to fix them or force them to get help.

The OP admits to knowing he always has a reason / excuse for not seeking help...

To the OP, if I misunderstood your opening paragraph then I apologize in advance to you and the previous posters for my unneccessary post.