The biggest wins were accomplished by the smallest chances

History is full of such examples. The smallest chances might cause the biggest wins over time. All the big companies such as Apple or Microsoft, all relied at some point on a small detail to become what they are. For Microsoft it might have been the option in the contract with IBM that allowed them to sell their product to other companies and not solely on IBM. For Apple it might have been the 1984 commercial that made them stand out so much from the other companies.

The point is that you should give your best at all times, you do not know which small detail might make you a winning behemoth.