There are entities which are in the world, and which act on people. They are here, around us at all times. In daylight, however, it is more difficult to perceive them, simply because the world is familiar to us, and that which is familiar takes precedence. In the darkness, on the other hand, everything is equally strange and very few things take precedence, so we are more susceptible to those entities at night.
There is only one way to learn, and that way is to get down to business. To only talk about power is useless. If you want to know what power is, and if you want to stress it you must tackle everything yourself.

The road to knowledge and power is very difficult and very long. Little by little you are plugging up all your points of drainage. You don't have to be deliberate about it, because power always finds a way. Take me as an example. I didn't know I was storing power when I first began to learn the ways of a warrior. Just like you, I thought I wasn't doing anything in particular, but that was not so. Power has the peculiarity of being unnoticeable when it is being stored.