Apply Yourself

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  If you apply yourself 50% you are losing as much energy as you are using. If you apply yourself 30% you lose more energy than the activity requires. If you apply yourself  at 70%, you may be doing well, but that tells us nothing about your potential. Only when you apply yourself 100% will you know whether the activity is profitable or not. If you do not apply yourself at all, you are simply wasting your time.