Aneela Idnani hid her stress-induced hair pulling for 20 years. So she founded a company, HabitAware, to create one. Its flagship product: Keen, a sleek, smart bracelet that users program to pick up on repetitive motions, such as hair pulling, skin picking or nail biting.

"The first step is being aware and bringing it to your attention... [Keen2] really is a brilliant idea."
–Howie Mandel on the Marcus Lemonis podcast