“So we’ve just got to try on the hat!” Ron whispered to Harry. “I’ll kill Fred, he was going on about wrestling a troll.”
-The Philosopher's stone
And they did in fact, wrestle a troll.
“My turn…” Ron peered into Harry’s teacup, his forehead wrinkled with effort. “There’s a blob a bit like a bowler hat,” he said. “Maybe you’re going to work for the Ministry of Magic…” He turned the teacup the other way up. “But this way it looks more like an acorn… what’s that?” He scanned his copy of Unfogging the Future. “‘A windfall, unexpected gold.’ Excellent, you can lend me some.
-The Prisoner of Azkaban
Harry did join the Auror department, post-Hogwarts. And he won a thousand gold Galleons in the Triwizard Tournament.
“I’m sorry,” Ron said, moaning a little as he raised himself to look at them, “but it feels like a – a jinx or something. Can’t we call him You-Know-Who – please?”
-The Deathly Hallows
Ron seems to have sensed the Taboo on the Dark Lord's name too.
Was all of this pure chance, or, did he miss out his opportunity on becoming the Second Cassandra Trelawney by not recognizing his own talent?