Dr. Caroline Leaf is a cognitive neuroscientist with a PhD in Communication Pathology Audiology. Her passion is to help people understand the power of the mind and the link between science and God as a tangible way of controlling their thoughts and emotions, learning how to think and learn, and finding their sense of purpose in life. She offers many resources on her site (https://drleaf.com/) and has a youtube channel you can subscribe to for continued teaching and education.
The youtube video below will give you good insight into the way our thoughts impact our mind and body. (Warning: Dr. Leaf talks fast and being a scientist speaks in "scientific language" so be patient - hang in there - you'll find some really good information!)