Strategies To Lose Weight Fast

I was wondering if anybody had any tips/suggestions for weight loss. I am about 5’10″ and way about 190 pounds, which is a little bit more than I would like. I want a workout that will help me lose not only weight but also excess body fat. Most importantly, I want to come up with a personal plan to diet and exercise to lose 20 pounds in 18 weeks. I know I am asking a lot, but I think it will be beneficial.

Thank you very much.