The first and the most important step is to educate yourself about the techniques used in fasting. You should also know the reason behind fasting and the required spirit. By knowing that some of the greatest messengers of God had also fasted to please their creator, you would be naturally motivated to fast and it would become a lot easier for you to face the difficulties of going through the process.
Make a schedule
By making a schedule of fasting and a proper timetable, you can prepare yourself. Write down the eating plan which you are going to follow before and after fasting.
Cut down on your addictions
If you drink or smoke regularly, you need to cut down on your addictions a few days prior to fasting. Apart from that, you should also limit your use of caffeine, salt, sugar etc. Cutting them off all of a sudden is going to be extremely difficult and may cause headache, discomfort or stomachache.
Eat smaller meals
A weak before fasting, you should begin to eat smaller meals. This would help your body prepare for fasting. You should cut down on your meals some days before fasting as it would actually signal your stomach, mind and the rest of the body about the upcoming fasts.
Resist your thirst
It is highly recommended by health experts that you drink a minimum of 8 glasses of water in all circumstances. However, in order to prepare your body for fasting, you should resist your thirst for a couple of hours about 2 or 3 times a day. This would really help you immensely in going through a fast without much of a trouble.