A month ago I decided to try the keto diet. 30 days in, and it seems to be working: I have lost 9 pounds! The hardest part about this diet was learning what I could eat. I am particularly glad that I learned how many carbohydrates are in the foods I have been eating all my life.
Right now I am severely restricting carbs. That's what keto is all about. Eventually, once I have lost weight, I will "graduate" from the keto diet. What I have learned in the last month is that there are good carbs and bad carbs. Most of the carbs I have been eating in the past are bad carbs, the kind that come from "white" foods like white bread, white rice, pastries, etc. Even when I am done with this diet I now have the knowledge I need to choose healthier foods.
I have a long way to go, but so far I have no regrets about starting this diet.