Constantine's Big Ego?

Some sources believe that Constantine has a large ego, huh.

"He always speaks highly of Constantinople, even when we're not talking about it,"

an anonymous source says. Could Constantine be getting full of himself? Many people believe so. It seems as if he repeatedly makes references to himself and his achievements. Is there any reason behind this? Some one reports, "Constantine always talks about himself. Someone got murdered across the street, and all he did was drink his wine and continue blabbing about Christianity." This is seriously getting out of hand. The citizens are starting to get angry that Constantine is taking the credit for everything. Is this going to be the fall of the empire?