If you are not prepared for what you'll experience when you do the Master Cleanse there's a good chance you'll fail. Typically lasting just 10 days, it's easy to see why people just "jump right in" to the Master Cleanse thinking it will be easy. It's not.
During your time on the Master Cleanse you are likely to experience hunger, aches, and irritability. Most people give up because of hunger. Putting solid food aside for a couple days and only drinking liquids is harder then most people think. Even though the cravings for whole foods can be difficult they do subside after a few days on the Master Cleanse.
So rule number 1 for finishing the Master Cleanse is getting past the third day. Instead of focusing on completing the entire 10 days from the onset of the cleanse just focus on getting past day 3. Breaking the Master Cleanse down into smaller milestones will be a big help.
Rule number 2 for finishing the Master Cleanse is dealing with aches and soreness. Headaches are one of the most common Master Cleanse side effects, but some people also get body aches.
To reduce aches you should drink a lot of water. It's also good to relax and not push your self too hard when you do the Master Cleanse. Exercising should be kept to light walking and stretching. Your body will be going through a rigorous cleansing process during the Master Cleanse, and won't be able to adequately recover from intense exercise during this time.
Rule number 3 for finishing the Master Cleanse is overcoming irritability. This affects the people around you more then it does yourself, but it's something you need to be aware of before starting the Master Cleanse.
It's best to let the people around you know that you're going to be doing the Master Cleanse ahead of time so they can do their best to accommodate you. Also try to plan your Master Cleanse when you're not too busy. Most of us can't just take 10 days off to do the Master Cleanse, but you should try to avoid doing it when you're swamped at work, or have other stressful events going on in your life.
There's more to succeeding at the Master Cleanse then I can cover in this small article. If you are serious about trying the Master Cleanse and want to be one of the people who do make it through the whole 10 day the Master Cleanse Secrets is the most complete guide available for helping you get through the Master Cleanse.