Dwight, I may be wrong but I'd say don't concentrate on the maladies. You can think about them for a second or two, but do not dwell on the problem. If you thoughts reside on anything it should be on perfect health. Completely Healed. Chi (Qi) can work on everything in your life, physical, mental, spiritual... event the world beyond you. Chi is directed by your thoughts, hence think of the desired state as if it exists. (aside: man this is a lot like NLP... I had to say that. I've thought it many times). Since Chi directed by your thoughts you don't want to dwell on a malady, you may find yourself re-enforcing the malady. Maladies are an aboration from your natural state, and are paths you should be leaving.
In the Small Universe meditations, I would say put everything into visualizing and feeling the energy in circulation. Nothing else.
In the Self Concentration, I would say when the instructions stop you should start visualizing / experiencing the state you want . Master Lin ends the instructions with you with the absolutely healthy self-image. I would say to explore and expand the image / reality. Experience it, feel it, become it.
I hope this help. This like most of my replies is as much for me and the person(s) I'm addressing.
You are perfection,
Iam2 
