Famous pivot stories are often failures but you don't need to fail before you pivot. All a pivot is is a change is strategy without a change in vision. Whenever entrepreneurs see a new way to achieve their vision - a way to be more successful - they have to remain nimble enough to take it.
I love those who can smile in trouble who can gather strength from distress and grow brave by reflection. 'Tis the business of little minds to shrink but they whose heart is firm and whose conscience approves their conduct will pursue their principles unto death.