With you mentioning Reiki and the reading, I'm assuming you're perhaps an interested devotee of things mind/body/spirit. We're definitely packed with a lot of physical and mental energy in motion (emotion), which connects us to the energy of life around us.
There is so much research being done these days into diet and mental health. High vibrational foods, such as natural or earthy foods are being proven to have a positive impact on our gut microbiome which can go on to impact the chemistry needed for mental well-being. This is a truly revolutionary and exciting approach to mental health, definitely worth looking into. The Mediterranean Diet is producing some amazing results. Also, whether we're spiritualists or quantum physicists, there is recognition that everything in us and outside of us works or vibrates at a particular frequency, therefor how often we eat, why we eat and especially what we eat impacts that energy inside of us. Low vibrational/frequency foods are typically processed foods. Low frequency foods can produce dis-ease in a variety of ways, mentally and physically.
It would be interesting to get the Reiki healer's take on the diet and energy relationship in anxiety. Of course, they're all about 'energy'. Perhaps they could recommend someone who works in the field of diet and energy.
With you covering all angles of self and that important triad of mind/body/spirit, I cannot recommend highly enough a book I love called 'Becoming Supernatural' by Joe Dispenza. He explains the energetic connection of all 3 aspects in such an incredibly enlightening way. He takes the MBS connection and approaches it from a neuroscience/epigenetics/quantum physics angle. it is a basic and easily relatable translation. The guy is a master in the way of simplification, education and empowerment.
Anyhow, I hope things go well with your visit and you receive the enlightenment and healing you're seeking. I actually visited a spiritual life coach a few months back and he made a massive difference. Incorporating all aspects of self into our healing is a deeply empowering approach.