How do you handle dissappointment?

Tanner worked so hard on his Science Fair Project. He researced, tested, tested again, studied, wrote, worked, worked and worked. He wanted nothing more than the pizza party and to go to District.

He didn't win. He worked hard and it didn't pay off. How do you turn this around?

Regardless, I am so proud of him. Not that it will make it better, but he is my winner!!!