How do you view the energies of the world? Do you believe in the healing powers of such things, for example? How do natural energies affect you? How do the energies of people affect you?
I'm interpreting this question as being about the spiritual energies of things rather than their measurable energies. It is an interesting question for me right now because I am sort of transitioning from one view/belief to another, and my answer is very different than it would have been even last year.
I think that emotions are a kind of energy. In the literal sense, adrenaline comes from emotion and can give a body more power than it should logically have. But beyond hormonal surges, emotions have a power over the mind which has power over the body and this can transfer in a way that seems magical and is inexplicable. I think that only creatures which have emotions can be affected by this energy; in my opinion this includes any creature with memory and the ability to make decisions.
I don't think there is magical power outside of emotion. I don't think objects have the power to do anything unless a sentient being gives them that power using emotion. So if natural energies means places in nature, stones, plants, etc, having powers to heal someone without emotion, then I do not believe that.
When it comes to things like prayer for healing, I think it can be a powerful way to focus emotions, and those focused emotions can heal a person. If nothing else, a belief that you will get better will soothe your stress, which makes it easier for your body to heal. Or simply being distracted from your illness by displays of love from people can also soothe stress, even if one doesn't believe in prayer.
I feel that a place in nature which has been left to itself for long enough has an emotional sense of interconnectedness with itself. That feeling makes me feel rested, nourished, and safe, and I am healed by those emotions, so I find protected natural places to be healing. However another person entering that space who finds such places to be unfamiliar and full of danger would not at ALL be healed by it; that interconnectedness might feel like a giant flashing keep out sign. It is my emotional response that heals me, not the place itself.
The same goes for objects like stones. They are not inherently anything, but if someone likes the way a particular stone makes them feel, then it can be healing for them to have it around. Stones are not more capable of healing than plush toy animals -- maybe less.
Emotions are magic, but they only work on beings that have memory and the ability to make decisions, and they only work on the micro scale. So you cannot pray for a better world and expect any kind of result, but you can pray for more confidence and get it.
But I do think sometimes when we pray or do spellwork for things, we actually end up getting them in a round-about way. For example, praying for a new job and because of this focus and hope, becoming more observant to notice opportunities and more courageous to follow through on them, and due to to that observation and courage, getting a new job. I definitely use crafted phrases, repetitively spoken, to help focus my emotions to bring me closer to my goals, and I have had astonishing successes that I would have thought laughably impossible.
The reason that testing things like prayer and magical spells always falls apart is that part of the scientific method is to remove the chance that emotion is swaying the results, but the thing works on emotions, so you can never reproduce it in an emotionless way. The placebo effect is literally the same thing as prayer: emotion causing an effect on the mind and/or body. The placebo effect is real, proven over and over: sometimes people get better just because their mind is convinced that they should. I don't think this is an unimportant fact, though of course it cannot be relied on and is no substitute for verified medical treatment.
[emotions have the most effect on humans]
As for the emotions of people, affecting each other's emotions is the main power that our emotions have. One can walk near a stranger who is very upset and pick up that emotion without even talking to them; emotions are often contagious. I do small rituals to deliberately remove emotions I picked up from someone else, or to re-align my emotional self with a person who I am trying to connect with.
I consider it a kind of attack to be angry at someone and stay near them physically while feeling and thinking about that anger. I consider it bad consent at best to be around someone and think about them sexually when they have not consented to that. I consider it a kind of attack to be wanting something from someone that they don't want to give and feeling sad about it and stay near them physically while feeling and thinking about it.
I don't broadcast anger or sex or sad at people and I don't allow people to do it to me if I can help it. Affecting people with your emotions is a kind of manipulation and it's not okay. Some aspects are inescapable, but at the very least, when the negative emotion is at its peak you should warn people and give them the choice to avoid you if that is what they need. Choice means that if they avoid you during that peak, they do not have to deal with fall-out afterwards. If one kind of choice gets punished, it is not a real choice.
To try to sum up this jumble: There is no magic but emotion, which is the power in prayer and spellwork. Emotion has power only on emotional creatures, only on the micro level. We have the ability to influence others with our emotions and we have the responsibility to be ethical with that power.
Edited to add, for clarity: I don't believe in or advocate prayer or positive thinking as a method of any kind of problem-solving. I just think that the mind has a lot of power for change within itself, and humans are HIGHLY affected by emotions.
I think this mostly has a chance to hurt us, which is why it's important. Like, there is this idea that for instance, someone saying something that hurts your feelings is no big deal if they didn't do it on purpose, but it IS a big deal and it can cause a ripple effect in your mind and body. And being exposed to trauma has a real impact on the mind and body even if the trauma is not to you or someone you know. Etc.