Making money is hard belief

Can you coach me on this belief I apparently have?

C:  Charging $4720 for a website
T:  It can’t be this easy to make $4720
F:  Guilty
A:  Consider charging less.  Don’t appreciate that it’s taken me 10 years to get to the point where building a website is easy for me.  Question/doubt in my mind when my client says she thinks the website looks good.  Worry that she hasn’t provided much feedback.
R:  I make it harder for myself to make money