In fact, only professionals choke. The word itself connotes that you operate at a level wherein you contend for the top position in the world. While vying for it, you missed, or "choked."
It just happened to Brazil.
It just happened to a hot dog eating competitor.
But if it just happened to you (and you're alive) there's no need to hang your head in shame. For one, you had the opportunity to choke, which in and of itself speaks volumes for the hard work and dedication you've put in up to this point. Two, in many cases you don't have to wait another four years for another opportunity.
Yes, yes, I know. This particular opportunity "will never happen again." This is true almost none of the time, even for a 90 year old who missed the last Halley's Comet. There are other comets. And, guess what: thanks to technology, we can see everything ever recorded at pretty much any moment.
No matter what happens, you can always focus your energy on what you don't have, what you missed out on, what you wish you had. That's a primer on how not to be powerful, happy or successful. It may sound like something from Tony Robbins, but it is true. If you had everything you wished for, you still wouldn't have everything that you WILL wish for once you get it. The secret to happiness is wanting less.
Nevertheless, in this particular situation, I'm sure you're looking for something to get you close to the sensation of accomplishment you were hoping for and which just eluded you. The same advice applies, plus my question for you is "what now?" You see, the story isn't over, ever. If you had just won the lottery you'd still be faced with how to keep the piranhas away, protect yourself, your family and your identity. If you had just nailed that job, now you'd be faced with how to be great at it every day. If you just beat your competitor, you'd still be faced with the next challenge. Each moment, each minute, each hour, each day you are still going to be faced with "now what?" Whether you choked or won, you still face the same question. You have to go DO something. Something else. No matter what.
So, sitting, inactive, impotently lamenting the loss, the choke... that's not what pros do. It's not what winners do.
And it's not what you're going to do.