I can relate to this in some ways.

I was studying towards my BSecEd, teaching prac lessons and even tutoring Special Needs kids in reading (my focuses were English and Social Sciences), but it was around the point of my third year when I was teaching Gr 8 English and Gr 10 Social Studies that I realized I had no idea whether I actually wanted to teach. Public speaking made me anxious, I wasn't as invested in it all, my lesson plans made me feel confused and overwhelmed…

I ended up switching majors twice to try to figure out what I wanted, switching to a BArts first and then BPsych. Neither really caught my attention (namely because a Psych degree would require at least a Masters in order to make me even somewhat employable and my student loans were bad enough), so I took a breather for a while. Since then I've moved to the States, had jobs in retail and even ranching and all of that and eventually came to realise that I was more comfortable with 1 on 1 tutoring than teaching a class of 30+ kids. It was also during my time studying BArts that I remembered my passion for languages whilst learning Anglo Saxon English, helping me reinforce my desire to become a Language Tutor rather than a High School Teacher.

Of course, now I just have to find a way to pay for U.S. tuition fees and a nearby Uni that offers more than just Spanish. Ideally German :P

Honestly, if I were to give my two cents (which you can take or leave), I would say it would be worthwhile enrolling Part-time to find your passion, possibly switching to Temp teaching. Keep in mind, I have no idea what your personal or financial situation is, so this opinion may be useless to you.
Honestly, though, there would only be two possible outcomes: You discover that it is your passion and switch careers (ain't nothing wrong with that) or you learn that it isn't for you and keep searching whilst still teaching to pay your way (nothing wrong with that, either).

As for the prayer side of things, I can't help you there. Honestly, I hope that the prayer helps you think over possible alternatives and options that you hadn't previously considered, opening up new possibilities, but other than that, I've never been much for praying. I'm more of the kind of guy who flips a coin, looks at the result and then goes with my gut feeling, being the indecisive Agnostic that I am xP

And don't worry about the fact that you feel like you've passed up your opportunity by accepting your scholarship. My wife was three years into her Graphic Design course when she realised that she wasn't passionate about it and ended up switching to a BSci degree, majoring in Wildlife Biology. This was with her parents helping her with student loans. She eventually went on to graduate with Honours. (I think that's a big thing? I have no idea. American Colleges confuse me sometimes xD)

Anyway, I hope any of what I said helps at all ^_^