Discipline can be no fun especially when we focus on how it feels and what you are going without (or whatever it is doing to your life). But, it is a good thing. God is working with us, molding us into creatures that will shine so bright for Him. And that is why we are here! He's helping us be free in Him, free to love, free to live, free to be filled with joy.
Discipline is a promise that God loves us. Discipline means we are His. He's not given up on us (He never does that). He's doing a good work. Let Him. Work with Him. Yield to Him. Oh, what joy to Yield to the Savior!