STAYING YOUNG in the mind does influence your physical body. I am reading Deepak Chopra's book "Ageless Body. Timeless Mind", that was released 10 years ago (got it out of the library) and the findings still hold true today. In fact, we are learning more and more about this remarkable power each of us possesses when it comes to our own well being and ageing.
There are some outside factors like exercise, food, and enjoying your work, BUT your thoughts about your exercise, food and work also add to how you grow old. So many old sayings apply, but my favourite is from Norman Cousin's in particular, - Belief creates biology, i.e. you are only as old as you think you are. So a great way to start is learning how to stay young is learning how to think "young". Read the book to learn the exercises and "secrets" on how to help yourself stay fit and well for longer and better quality of life....
Hypnotherapy is great for self-talk as it really targets the unconscious mind into believing how you want to feel. We know from several studies how powerful the mind is in healing the body from illness - and if you think about it, many people see growing old as an illness. It doesn't have to be that way.
I am going to order it for my mom as a Christmas present. She is young in mind and body, and this will encourage her to stay that way for the rest of her years. Christmas present that literally will be used year after year, after year.