It's not so much that I've stopped asking questions, as it is that I am no longer unsafe about what I know. I question my reality every day, but not having all the answers no longer scares me. I know what I know, I know what I don't know, and I know what I think but can't prove. I find out new things every day, and that makes me happy.
I stop asking questions once I am satisfied I understand something, not before. Sometimes I'll leave a question for later, to give my brain some time to digest it, but besides that, I'm always working through something or other. Just gotta ask the right questions is all.