Deuteronomy 31:7
"And Moses called unto Joshua, and said unto him in the sight of all Israel, Be strong and of a good courage: for thou must go with this people unto the land which the LORD hath sworn unto their fathers to give them; and thou shalt cause them to inherit it."
Imagine trying to be the next president after George Washington. After all he did for America, it would be hard to fill his shoes. The comparisons of how he led could have easily been frustrating for the next president. Following a great person cannot be easy for anyone.