Mistakes, Learning; a TED video with a simple message

A lot of this stuff is covered in my education courses in school.  I discussed learning goals in a paper on humanistic approaches to music education.
For example:

Task mastery goal seekers are those that use effective learning tactics to acquire new knowledge and skills even if it means occasional failure or disappointing performance. 

Performance-approached goals are principally motivated to outscore others on exams and assignments to demonstrate their ability; conversely, performance-avoidance goals are principally motivated to avoid failure through self-handicapping, avoiding challenging tasks, and cheating. 

Performance approached goals suppress intrinsic motivation and equate failure with low ability and performance-avoidance reinforces low self-efficacy and stunts intellectual growth.  Mistakes and failure need to be treated as part of the learning process, they are not to be looked down upon, but rather as a learning experience and as progress.  Creating an environment where mastery is the goal is the goal.