I am not certain if "staying hungry" help in boosting success, however, it only makes one want to eat more and become obese!! Obese people always burn out quickly.
Whilst most people agree that external factors are transient yet they chase them and in due course start panting, totally burnt out. So is motivation, that come from external factors & does not last. Burn out is frequent and over time many give up.
Where as Inspiration comes from within and lasts. Let's take example of a mother going through difficulties during pregnancy and later nurturing and protecting her child till they stand on their own legs. No matter what her health, financial or other conditions, she derives the energy and passion from the universe! She does not feel burned out even if she is hungry!! Her child always in her mind does the trick!
What is the reason mothers do not get burned out? They live for higher purpose which is beyond material satisfaction, beyond themselves. Businessmen are lucky that business does not take this long to sustain.
My suggestion is business should be done with a higher purpose in mind, in the larger interest to serve the society. Yet, being human, one may burn out occasionally, but seeing smiles and happiness on customers' face, gives them resilience, the strength to move ahead, just like a mother on seeing her child, mobilises energy from the universe which is within her!!
It is inspiration through intuitive perception that helps me overcome insurmountable challenges that awaits at my life's door every day I get up but yet not burned out!!!