Earn (one's) spurs phrase
To show that you are able to do something very well and such that earn you a reputation.
John has earned his spurs as a top coach by making his team to become the greatest football team of all time.
John earned his spurs for the most competent manager in his company twice.
With a view to earning my spurs as the most persuasive salesperson in my company, I sold a useless product to the one who doesn't need it.
To put one in a situation in which they must show their worth, skill, or ability.
If you make something stick, you prove that it is true.
The verb "earn" must be conjugated according to its tense.
This phrase dates from 1600s. It originated from the literal award of gilt spurs on reaching knighthood.