Peter F. answered 06/09/20
Well-read Upper School English Teacher; 18 Years' Teaching Experience
Hi Laura,
I can provide you with an overview of what the quote refers to in basic terms.
"Deeper powers within ourselves" refer(s) to: spiritual powers, determination, incentive, initiative, desire, will power to succeed, epiphanies, lightbulb moments, being on a mission, goal-oriented, going full speed ahead, etc.
In terms of phrasing this quote into an essay: it sounds like the question is to be answered from a personally meaningful-relevant standpoint on your part. You can approach it from a philosophical perspective and make as many connections as you can think of to/from everyday life, with each new connection/point made constituting its own main-body paragraph in your essay.
In your introduction, you can create an opening series of simple statements (including a thesis statement written in the closing sentence to your introductory paragraph) that relate to the topic of discussion at hand, referencing each main point one at a time.
For your conclusion, you can concoct a wrap-up statement summarizing all of your points made regarding the essay topic in one fell swoop essentially, closing with a hook- or punch line of some kind that you feel best emphasizes your thesis statement in a nutshell.
Good luck with the essay writing! Let me know if I can be of any further help through hired tutoring.

Peter F.
06/09/20
Laura B.
Thank you sooo much!!!06/09/20