Many people focus on what they are giving up when they fast, but it is important to recognize what you can gain during this time. You can gain strength, guidance, deliverance, humility, compassion, dedication, and love. You can overcome temptation, express repentance, show grief, remove negative emotions, and seek guidance. Fasting does not change God or make Him hear your prayers more loudly, but it changes you and allows you to hear Him more loudly.
It is amazing how being hungry can cause us to become agitated, impatient, and angry. Fasting helps you remember that your flesh is not in control. It is hard but lean on the Lord and allow Him to be what strengthens you.