You lose only if you decide to lose

You lose only if you decide to lose. Once you decide to lose you stop trying hard and thats where you lose. In the game of cricket, all of us have seen batsmen getting out just after scoring a century. Thats because they get satisfied and hence the effort and energy goes down whereas bowlers are still trying hard to take the wicket.
This simply means that the moment you get satisfied , your energy level goes down, you want to relax and thus give a chance to somebody else to win. Thats where you lose...
The moment you get satisfied, process of losing starts. There is a bicycle theory. It says that you keep paddling a bicycle till the time you dont achieve your desired speed. Once you achieve that speed (get satisfied) you stop paddling and thats where speed starts declining (process of losing starts). So, if you want bicycle to run, you need to continuously paddle it else you will fall down.
Life is like a bicycle. If you have to ride, you need to paddle else you will fall down. You cant afford to not paddle and still sit at top. So if you want to keep sitting at top, keep paddling..

Cheers