Advice on philosophy?

I am not very far into my yoga journey - I've been practicing about a
year, all told - but I am having question after question after
question. The cl***** I'm taking and the practice I'm doing at home
are helping me to refine the physical part, but what's happening to me
mentally and emotionally is throwing me into confusion.

Can anyone suggest a book or a couple of books that will help me
understand the way I'm going about this journey? I'm having trouble
internalizing the fact that I can't apply my natural perfectionism to
yoga, and that I maybe need to discard my perfectionism altogether to
enjoy yoga properly. I'm so confused about the way I'm practicing and
I need some guidance. My yoga teacher is wonderful, but she has a
whole class full of students, and I feel like I'd need another hour
after the class is over to discuss all this stuff with her. (I wish
there was a companion class to my yoga class on yoga philosophy!)

I bought The Heart of Yoga (which looks good, but kind of high-level
for me) and Light on Yoga (which, flipping through it, is just
intimidating!). Any other suggestions?

Thanks!
Kat

PS: Do I really have another seven years before my hamstrings stretch
out??