Jesus said when you fast not to act like you are fasting. If you act like your fasting the attention you wanted is the reward you get. As you acted all gloomy and depressed because you are going without food —you pampering yourself is your reward. Your god, (food) the thing you are thinking about your whole fast is making your fast about a god before God. The very thing you are thinking about in your fast is food, not God.
Matthew 6:16 And whenever you are fasting, do not look gloomy and sour and dreary like the hypocrites, for they put on a dismal countenance, that their fasting may be apparent to and seen by men. Truly I say to you, they have their reward in full already.17 But when you fast, perfume your head and wash your face, 18 So that your fasting may not be noticed by men but by your Father, Who sees in secret; and your Father, Who sees in secret, will reward you in the open. AMPC
On the other hand if you fast with purpose and in faith of receiving from God; that is fasting with intention. Fasting is a time we choose to be alone with Jesus. A time of an intention in seeking God for direction, healing, or some other manifestation of His promises.
Jesus is giving us the wisdom we need to clear up our indecisiveness in fasting. In our lack of understanding of why we fast —we are hypocrites. Fasting with no intention and getting all gloomy about it makes our fellowship in the fast with food. The enemy then is who we are fellowshipping with on the fast —rather than God.
So let us understand and take heed to what Jesus is saying here. Fasting is something we do in faith and with intention to seek God. We fast to be with God, to take time alone with Him and get into His presence. We fast to get His opinion, the answers we need in our situation—from Him.
It takes faith to fast and go to Him and that pleases Him. Right? Have you decided to go to someone else or are you going to God? Are you seeking God or another? You are seeking God—and in seeking Him you will find Him and that pleases Him.
Fast with intention, be bold about your faith!