#WATCH# | Delhi: Dr Sriram Nene, Cardiovascular and Thoracic Surgeon and Founder of Pathfinder Health Sciences, says, "The thing with sugar is it's a bit addictive. It spikes your dopamine in your brain. As we're finding out more, you can actually defeat it by just weaning yourself off. Another habit formation. What you'll find is if you stop putting exogenous sugar into your coffee or tea or into your foods, and just eat natural sugars, by the end of seven days you'll see a change. By the end of 14 days, it'll get even more firm, and by 21 days it'll almost be gone. That's not rigid habit formation, but your taste will actually change, and the dopamine in your brain will change. You won't respond to it..." He adds, "Once in a while is fine. You're gonna have days, and you'll take three steps forward, one step back. Be kind to yourself. The idea is it's a lifetime of good deeds that will get you to the finish line..."