I'll chuck in my two cents. I have long thought on similar topics. The energy itself is not negative. The type is just not right for where and when it is. The effects of this placement can have effects that we would label negative or bad.
If I go around stealing and hurting people that is just qi in the wrong place. Having effects we label undesireable.
In SFQ we are developing within ourselves a capacity to obtain and direct a type of energy that is helpful for physical, mental, emotional and spiritual health. Those last words are labels, but they reflect our goals and the nature of the energy will are learning to call upon.
As jeffdengr refers to Master Lins words; as you develop in SFQ your own energy changes and as you change through this practice you become less suscepitble to external influences that go contrary to the energy with which you are working. As your energy develops you will influence your environment more and more with your type of energy.
In a story I heard Master Lin tell, he had a person destroy (burn) an antique piece of furniture because the energy it held (and held by previous owners) was unhealthy for her home and family. The person really like the piece and was reluctant. Several unpleasant thinks occurred in the family. She finally relented and the day she burned the piece some things began to mend.
You are perfection.
Iam2 
