I am currently on a diet, but it's really a lifestyle change since I am focusing on proper nutrition for the long run this time!
It sure is a lifestyle change. Proper nutrition is a must since people can only survive without food for up to 40 days. 
Absolutely! I was too accustomed to yo-yo dieting and wrecked my metabolism. But I'm glad I have a proper mindset towards nutrition now. It won't "feel" like a diet.
Yes, weight cycling isn't cool. You get excited to lose the weight then you gain it right back!  
Yep!! Usually you end up losing water weight, or you actually burn fat, but then return to old habits and gain it back even quicker!
Water weight and hypo-caloric diet that was of course too extreme. 
It was intense. But I am down 31 pounds now with just healthy eating and being more active. It feels great to have a healthy relationship with food and myself finally!
That's amazing! Have you ever watched The Biggest Loser? It's on it's 16th season.