I find the premise abstract and distant and unrelated to the matter at hand (perhaps aka "daily practice"). What's the good of asking about "power" as an abstract -- how can that help anything?
Answer -- re. political power
I think it's Buddhist doctrine that people have the power -- i.e., the ability -- to do good and evil.
And that good and evil acts have consequences.
And that power isn't as worthwhile as morality and self-control (as you might find summarised in the Dhammapada for example -- or perhaps role models from later traditions).
A vivid or extreme example of that was illustrated in this answer about the Holocaust.
And as well as like "good and evil" there is also "ignorance" (see Three poisons) -- and "good" might be subdivided, into "virtuous" or moral, and, "skilful".
Answer -- re. psychic-powers
In conventional life you might want to distinguish between a so-called "power" and a so-called "disability".
I'm reminded of a story -- in the pre-20th-century States (North America), somebody claimed to be Jesus come again, and attracted a following. Eventually he met some immigrants from Germany who asked that he speak to them in their own language -- and then, they reproved him saying, something like,
You claim to be the Son of God, but you can't even speak German? Bedlam is the place for you.
Personally, I once reckoned that a supreme being can or even should also be conventionally well-behaved and socially ept (otherwise the condition is, perceived by others, a disability).
Time is a tourniquet for scars but what heals the injury?
The better injury is none, and maybe the best behaviour should cause no injury.
From an earlier answer, this might help with injury:
Remove oppression (expectations and demands). Provide a safe environment, where a person can't easily hurt themselves. And the necessities of life. And age-appropriate toys or tools. And good friends, some enjoyable group/social activities -- role models.
And loving-kindness -- the brahma-viharas.
But there's more -- Buddhism might identify the injury as caused by the cycle of birth and death, unwise attachments and views and pursuits. And there are a lot of traditions and doctrine, words, about the cure -- perhaps including the Flower Sermon.