We all have something called "The sympathetic nervous system" which is there to pick up on threats and give us signals like bursts of feelings such as anxiety, anger and disgust.
You will notice all of these emotions in 'losers' after a game, at tournaments, at work and so on. So when it comes to losing, we are feeling threatened, in danger, as if our very existence is on the line. It sets off alarm bells if we are the worst in the group (you don't have to run faster than the bear, you just have to run faster than your friend). Our brains are hardwired to keep us alive by warning us of danger and to fight or run in order to survive, and that is why it is so very emotional to lose.
We must be controlled enough when we lose (and you will lose at some point, we all do, it happens to the best of us, just look at Messi up there) to be able to sit back, reflect on it and learn from it. You can't and must not lose your temper like Didier Drogba when he loses, running around like a little kid who can't get candy. No, that's not you, that's not us and it is certainly not the Life and Mind mindset. Instead you have to think, how can I come back stronger? Where did I go wrong and where can I improve?
It is a positive to lose. After all, how do you know you're at the top if you haven't been at the bottom?!
To do all of that requires effort, you gotta grind, no one will do it for you. If you don't then you're gonna get beat! Don't let yourself get beat! You're getting beat at every job interview you go to right now, and why? Because you aren't willing to put in the effort required to win. The other guy is, he's willing to give 100% each and every day. You can learn languages, get qualifications and more experience all for free online and what are you doing? Sitting there wondering why you're getting beat that's what.
The lesson for all of you here is to compete more! Compete regularly. Compete in competitions. Compete 1 on 1. Compete with the stranger beside you at the gym. Just compete. Lots! Nothing is going to teach you to lose better than being in that situation again and again and again (do try and win if you can though, obviously).
Of course, if after genuinely trying all these tips that I have outlined that you want to find another way, I have one final option for you: train so hard, and get so good, that you never ever lose again!
Fly your own flag