He was too proud to share how he truly felt. He tried to do it all by himself and the stress killed him.
Have you been boasting lately? Have you praised your own wisdom, power and might?
In my experience, I have found ego to be nothing more than pride in its bloated state. For example, a cavalier man (no pun-intended to my Cleveland Cavs Fans) is extremely pompous when it comes to his money, position, education and etc.