Medida / Size

Pierde la medida y medirás lo que pierdes.
Mide lo que ganas, y ganarás justo eso, una medida...
Midas lo que midas, mide con quien te mides.

If you miss the measure, you will measure what you miss.
If you measure what you win, you will win just that, a measure.
Whatever you measure, do measure the one you measure with.