Hi there-
I think you and I got our SFQ's in the mail about the same time - I've been practicing for about 1 week also. And I feel the exact same way - Things hurt, can't visualize well, can't visualize at the same time as thinking of breathing in through my whole body, and on and on...
Here's the mindset I'm planning on using with this experience.

Just Learn HOW to do the movements first.
One Day at a Time.
Trust that it works no matter what the experience feels like or how good you are at it at first.

Granted, I want to feel some amazing powerful thing, too, it's just human nature I think. But a part of me is telling me to "Just DO IT" and eventually, whatever needs to come along will.

Hope this helps!
I'm in the same boat with you!
Smiles...