In traditional Chinese medicine, most health issues are caused by external etiological factors and internal etiological factors. External etiological factors are natural elements. These include wind, coldness, dampness, dryness, heat, etc and attack the body and cause sickness. Internal etiological factors are emotions such as anger, worry, over thinking, sadness, fear etc. Long term internal etiological factors can overload the body cause health issue. In modern society, there are more internal etiological factors that can cause health problems than ever.
Lately, I have several patient’s health issues related to their mood. By coincidence, I also saw this poem on a Chinese website. I translated it into English, so more people could benefit from it.
Forgive everything before going to sleep, 
forget our body’s fatigue and discomfort
closed your eyes as you lay in bed
enjoy the peace at the moment
forgive everything
all the mistakes and misunderstandings that happened today
they have all already happened, and become the past
just accept life as it is
forgive everything before going to sleep
Everyone has their own path
the separation will come after all the crossing of lives
we have to learn to accept the unpredictability and give ourselves a break
forgive everything before going to sleep
do not recall other’s mistake and misspeakings
do not be the focusing point of negative emotions
or the starting point of the negative energy
No discomfort is needed.
forgive everything before going to sleep
you might have a lot of memories
but no matter what you remember
either a good or bad thought
forget all of them when you wake up, for you have no need to remember them
forgive everything before going to sleep
till the sun rises up next morning
the sunlight will fill your room
and your soul
when you open your eyes
you awake a new person