I reach a point during meditation where my mind spontaneously stops, my hearing becomes very aware of sounds and there is only present-moment consciousness. It's so peaceful. Like Adya says, it's a spontaneous awakening. Just like waking up, it just happens. Has anyone else experienced this in meditation?
Then your meditation is helpful.
If you get hung up on "meditating" for the sake of meditating you'll miss the point of it. Too many people turn it into a "practice", a ritual that "must" be done. That only keeps the "meditator" locked into the mind. The most important point in meditation is when the practice simply stops and there is no more mental input or impulse to keep a technique going.
It's weird, because on one level I know the answers,
That's right. The "level" the answers are known comes from what you are.
but on another I don't.
That's right, too. On the level of mind you don't. It's on the level of the mind that struggling to understand takes place.
Any suggestions from experienced meditators?
Be willing to let go of technique and simply be.