Here were four items mentioned in today's homeroom session that are needed to achieve greatness. fill in the blank for the item that is missing: grit, determination, and development of good character and habits

strength

Explanation: the four things that needed to achieve greatness include grit, determination, strength and development of good character and habits.  

The major factor has to be strength and that not only the physical one but mental strength too. In order to achieve greatness one has to have the strength to go begin limits and do what an average person might not. He or she must have the strength to work hard and most importantly the strength to never give up.

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