Jeez, empty, I'm sorry you're feeling so bad! I, too, somehow survived horrible depression from childhood through mid-40s before I sought help. It is never too late to get help and I think you know that's what you need to do. I agree that if you have a GP that is a good place to start. Also, many places have community mental health centers that operate on a sliding-fee basis. Your GP may be able to refer you or check online or the phone book. But, do get help; you deserve it!
Take care.