There is no need to "fast"... Seriously, why would you voluntarily starve yourself? Eat healthy and exercise. Your body will naturally cleanse itself...
For real tho, you should follow through with juicing to some degree. I highly recommend smoothies for breakfast (I am too poor to afford a juicer). They are energy in a pure form that is easily digestible and they have tons of sugars to kick start the day. As far as a recipe goes, just freestyle it. Grab anything -fruit or vegetable- and just throw it in the blender. Its really difficult to actually make something that tastes bad imo. Also, don't use ice cubes, buy some frozen berries instead.