Millions of people struggle to break bad habits like smoking, spending too much money, and overeating. While breaking these habits is notoriously difficult, a new piece of technology could make it a whole lot easier.

The Pavlok is a bracelet being sold for $200 on Amazon, and it will actually shock you if you partake in one of these bad habits. Any time that you get a craving to do a habit you want to break, you can shock yourself with the app on your phone, and the bracelet will give you 150 zaps per charge. If you’re honest and actually give yourself a shock any time you get the craving, you will start to associate the habit with pain, making it easier to stop doing it.

“Pavlok allows you to speak your reptile brain’s language by adding an unpleasant element (a safe and harmless ‘zap’ of electricity on your wrist) to what you have been taught to love (your nasty lingering habit),” Pavlok’s Amazon page states. “Quickly conditioning your mind to associate an “unpleasant” feeling with your bad habit… and stopping it all together.”

Pavlok also has a ton of success stories from people crediting it with helping them break nasty habits.

“I didn’t want to shock myself so I wouldn’t eat the food in the first place,” said a woman named Tasha. “I haven’t had any refined sugar, which is awesome…I feel like I’m back in control of my relationship with food. I feel like I have a much healthier relationship with food.”

“I tried a lot of things to form new habits and break old habits,” added Dave Rogenmoser. “When I got Pavlok, I was really impressed with the quality. I started using the little alarm system that helps to wake you up. After doing that for 30 days I woke up more consistently than I ever have in my life. Love it.”