Energy Management in both meanings is an incredibly valuable skill to learn as it can complement all of your other activities. When used responsibly some of the techniques have amazing amounts of potential. While it is harder to learn than some other skills, it is well worth the work.
Quite obviously the one way to avoid needing more energy available is to learn how to use what you already have better. While I’ve touched on this before in my other articles its worth mentioning again.
While the various sources of it are debatable, one thing people can agree on is that there exists a general level of psychic energy free-floating in the environment. While it seems to be in higher concentrations in the more populated areas, there is some level of Ambient Energy everywhere on the Earth. Most psychics ignore this source, but it is possible to tap into it for an additional supply of energy.