You say "just for you" like you and your issues around food are small and insignificant? You cannot do His work in the world if your body is not well. If not you, then who is worthy of Divine Grace touching their life and being healed from whatever ails in mind, body and spirit?
I hope you do the fast and know you will be successful, and know that YOU are being called to fast and purify your Being. This is no small matter and YOU and the issues that exist in your life are as worthy and deserving of the tremendous benefits and healing that Water Fasting will bring.