What I know for sure is that pleasure is energy reciprocated. What you put out comes back. Your base level of pleasure is determined by how you view your whole life.
There are three layers to the universe. In the lower, Tai Ching, and the middle, Shan Ching, the hindrance of a physical bodily existence is required. Those who fail to live consistently in accord with the Tao reside here. In the upper, Yu Ching, there is only Tao: the bondage of form is broken, and the only thing existing is the exquisite energy dance of the immortal divine beings.
All happiness depends on courage and work. I have had many periods of wretchedness, but with energy and above all with illusions, I pulled through them all.
Concerning matter, we have been all wrong. What we have called matter is energy, whose vibration has been so lowered as to be perceptible to the senses. There is no matter.
All life is energy and we are transmitting it at every moment. We are all little beaming little signals like radio frequencies, and the world is responding in kind.
Some authors have conceptualized depression as a "depletion syndrome" because of the prominence of fatigability; they postulate that the patient exhausts his available energy during the period prior to the onset of the depression and that the depressed state represents a kind of hibernation, during which the patient gradually builds up a new story of energy.