One tip former Masters champion Zach Johnson picked up: An 'attitude of gratitude'

As Zach Johnson prepares for his 21st Masters appearance, he shares some mental skills tips and practices he's picked up along the way.

One tip former Masters champion Zach Johnson picked up: An 'attitude of gratitude'
As Zach Johnson prepares for his 21st Masters appearance, he shares some mental skills tips and practices he's picked up along the way.