Strange are the ways of the world.
People who lose don't know how to win. Losing instead of stimulating them to work harder, acts as a vicious circle and they get more and more negative and their losing streak continues.
On the other what is the secret of winners, they work when they smell victory. A tiny sentinel win, which otherwise would seem useless to others, stimulates them to do extra-ordinary effort. They can subconsciously feel the possibility of winning.
You don't put extra-ordinary effort when you lose although, stories make you think that is the case. In real life, you need to get the sense of impending win.
That's the smell of victory. That's the most potent stimulant.