VIDEO: Sneak Peeks - Tonight's MY 600-LB. LIFE and FAT CHANCE on TLC

Tonight at 9/8c on MY 600-LB LIFE, Randy's food addiction has led to the loss of his marriage and visits with his daughter. He's currently weighing over 650-lbs, and in order to regain control of his life, he endures a rigorous pre-surgery diet while surrounded by fast food temptations. Will he be approved for weight-loss surgery?

Then, at 10/9c on FAT CHANCE, Vanessa is an accomplished singer, but her talent is overshadowed by her size. At 235-lbs, Vanessa lacks the confidence to confess her feelings to her crush, Kyle. She decides to lose the weight and finally tells Kyle how she feels.

Watch sneak peeks of both episodes below!