I read this sentence as containing two main clauses: "it's about creativity, proving . . . problems" and "it is about the arduous moments . . . surging epiphanies." These clauses are separated by a semicolon, which is perfectly fine. The second clause contains a list that is also separated by semicolons, but I see no reason to use semicolons in that list. (Semicolons are usually used in lists only when commas would cause confusion.) I'd simply replace them with commas:
It's about creativity, proving properties of mathematical systems and the naturally captivating, beautifully-crafted problems; it is about the arduous moments of head-melting logical thinking, the infinite possible pathways, the dead ends, the methodical yet creative logical arguments, the crawling focus that obscures all except thought, the moments before progress, and the illuminating, surging epiphanies.
Of course, this is a very long sentence, and you could make it even simpler by breaking it up into separate sentences.
By the way, I see two more issues: 1) Most of the definite articles seem awkward to me, because as far as I can tell, most of the items are not specific. Some of this is a matter of style, but I'd probably delete most of the definite articles. 2) The list in the first clause (assuming that it is a list of three items) omits the Oxford comma, while the list in the second sentence retains it. That is inconsistent.