Good luck! I hope you'll be able to have a ritual burning of that nick at the end of your fast. :) Or you could just keep it to remember your success. Your goals are great and all very achievable. It's great you have started this new journey towards better health and we'll support you all the way.
Read up as much as you can about fasting, this free online book is a great place to start:
And plan your days ahead to keep you occupied and away from food, or the smell of it, or advertising of it!- if you can. If you can't just be as prepared as you can be to fight any cravings they will stimulate especially over the next couple of days.