what did Moses think?

I've been wondering a bit about Moses. There's a lot to wonder about him, when you think about it. well, at least to me.

He was told to lead his people out of Egypt. And he did. It wasn't an easy task, but he did it. That's pretty cool. But that's not what i was thinkin' about.

Moses had a goal. He knew (mostly) where he was suppose to be going, the promised land. But sadly, it took a long time to get there.(... 40 years of wandering is a long time.) So, Moses wandered around the desert for a long time. He knew where he was suppose to go, but it was taking a long time, a very long time.

What was Moses thinking here?
... he seems to be goin' in circles, aimlessly waiting... how does he feel about that? does he ever wonder if he's on the right track? maybe he misunderstood his purpose? does he ever, even for a moment, doubt? question?

i know, i know... Moses got to talk to God, he even got to be in God's presence, His actual presence. But, he was still a man.

so, i'm left with my own wonderings...
what did Moses think about all that waiting and wandering?