Flipping the On Switch is the act of going from lethargy to productivity, but more so in self-improvement than in other ventures, save for buisness. A mental tactic to change one's personality from simpering to being forthcoming and stalwart. Similar to the saying "Kicking it in Gear".
Guy 1: "Ben's performance in the last quarter was pretty bad, but look at him today, his sales are through the roof!"
Guy 2: "Yeap, he must have Flipped the On Switch"
"I really had issues, going from laziness and lieing, making everyone else do things for me and being an all out bum. Then I discovered Flipping the On Switch and I feel great, no laziness, all go-getting ability and nothing but the truth!"