The game of bridge has this concept of vulnerability ... As soon as you win a game, you become vulnerable, so stakes for winning and losing the next game increase, i.e. you get more points if you win a subsequent game and you lose much more if you lose.
Life is more of an opposite ... here stakes go high when you lose something ... One big loss and you lose lots of confidence and every single subsequent loss, however small it might be, makes you lose even more confidence ... And then it starts reflecting in other stuff that is not related to the original loss.
I was taught in a soft skill training that emotions arising due to one issue shouldn't be taken out on something unrelated ... we may make ourselves strong enough to do that ... But though there may not be a direct impact, it certainly leaves me vulnerable.