Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down.
When I was research head of General Motors and wanted a problem solved, I'd place a table outside the meeting room with a sign: "Leave slide rules here." If I didn't do that, I'd find someone reaching for his slide rule. Then he'd be on his feet saying, "Boss, you can't do it.