Most people, including most doctors, are still largely unaware of the huge influence that our mind has on our body. There are ways to use our mind to greatly improve our health. And ways to use our body to improve our mental health!
One of the most important reasons to choose for holistic methods is that more and more people become aware about the connection between mind and body. It means that our thoughts, feelings, beliefs, and attitudes can positively or negatively affect our body and physical functioning. Our minds can affect how healthy our bodies are!
But also, what we do with our physical body (what we eat, how much we exercise, even our posture) can impact our mental state (again positively or negatively).
Conclusion; we can make use of therapies that use the body to have influence on the mind and vice versa; methods that use the mind to have effect on our body! There is a long list of possible therapies and methods;t for example for the first case you could use yoga or tai chi, and for the second case you could use meditation or hypnosis, just to mention a few.