Energy Source, Where do you pull from? Options

I pull energy from the core of my being. I have no better way of explaining it than that. It's kind of like a state of mind exercise. All I can say is that I allow my paradigm to allow for it. I almost never use my chakras. I have them developed ever so slightly, but I'm not great with using them.

The question I have is: Do you pull energy from your chakras, your environment, or from somewhere or something else?

Generally the Chinese system of Qigong talks about 'Tianqi' or heavenly/sky energy, and 'tuqi' or earth energy. Tuqi is more yin and Tianqi is more yang. The sun and stars are yang, while the moon is said to be yin. Because our energy is generally more yang than yin, I tend to pull energy from the earth in order to balance my energy.