Be happier than before

I am looking for some assistance for my best friend of who is in her thirties. Martha has been my friend ever since we were in school. We have been through thick and thin in life. I am a homemaker while she chose to become a working mother. Now after all these years I feel sorry for her, as she has taken upon herself many responsibilities at home and work. She is very over-worked, looking after the home, husband, kids, job and all the demands that come with life. I want to help her find her own self worth and live a life she can love! Is there any way out?