Mental acuity of any kind comes from solving problems yourself, not from being told how to solve them.
A good problem is something you don't know how to solve. That's what makes it a good puzzle and a good opportunity.
The thing I want you especially to understand is this feeling of divine revelation. I feel that this structure was "out there" all along I just couldn't see it. And now I can! This is really what keeps me in the math game- the chance that I might glimpse some kind of secret underlying truth, some sort of message from the gods.
Doing mathematics should always mean finding patterns and crafting beautiful and meaningful explanations.