your finest hour

(one's) finest hour

The moment or time of one's greatest success or achievement. The team's come-from-behind victory in the semi-finals proved to be their finest hour.
See also: fin, hour
Farlex Dictionary of Idioms.

your finest hour

the time of your greatest success.
1940 W. S. Churchill Speech to House of Commons Let us therefore brace ourselves to that duty, and so bear ourselves that, if the British Commonwealth and its Empire lasts for a thousand years, men will still say, ‘This was their finest hour’.
See also: fin, hour
Farlex Partner Idioms Dictionary
See also:
  • (one's) finest hour
  • fin
  • at (one's) doorstep
  • at doorstep
  • at expense
  • at somebody's expense
  • at someone's expense
  • at (one's) expense
  • (one's) day in court
  • (from) top to toe
References in periodicals archive
Your finest hour may be just ahead in one of life's little challenges.
Attitude check
I suggest you set the stage for your story so the audience can fully grasp why this particular example was your finest hour.
You should always know which single career activity was your finest hour. Each of us has a story to tell, and you should never be so humble that you don't tell yours.
The next time you are asked about the single most important or impactful decision you've made in your career, I hope you will be ready to share your finest hour and tell your story!
Your finest hour: tips for framing a story about the most important decision you made in your career--and putting the hiring manager in your shoes on that day
And, as Churchill implied, this work should be your finest hour.
And through it, you will find yourself prepared for the work that will be your finest hour.
Special moments be prepared to succeed