The 28-year-old said that she has gradually learned to take control of her diet and exercise regime and food urges, reported Showbizspy.
"I am an emotional eater. When I get upset, my diet goes out the window. Now, I have finally learned how to eat properly and I have found ways to make working out a fun part of my life, like getting my friends to do it with me," she said.
Though Osbourne, who is dating vegan chef Matthew Mosshart, watches what she eats, she has a "cheat day" every week and knows depriving herself when she craves a particular food would only make her miserable.
"I have one 'cheat' day a week where I eat whatever I want. I usually indulge with pizza and cheese. I love brie and cookies. But when I am full, I stop eating."
"I have put a lot of hard work into my body over the years and, in the process, I have learnt to love myself. Never deprive yourself of anything because they you get angry about it. People who are always hungry are miserable," said Osbourne, who is known for her fluctuating weight.