Starting any weight loss regime can be a bit intimidating. It involves change, and change is hard. The advantage of doing this 800 calorie diet is you can be assured that it has a proper scientific backing and that many others have been there before you. The important thing is to make sure you are in a good place, mentally, before you get going, have contacted your doctor (if you need to) and that you are ready for the first week or so to be challenging. The changes will be worth it! Best of luck! Let us know how you get on and do share any tips.