He was voted the best player in the opening day 2-2 draw with Benin.
“I am not surprised [by my performance]," Ayew told reporters in Egypt.
"I have confidence in myself and I know that I just need to keep on working hard.
"People are now seeing the hard work I have put in for all these years.
"This is something I knew I was capable of doing so none of it surprises to me at all."
Ayew's goal-tally makes him the second-joint-top scorer at the tournament, and he made Caf's best XI for the group stage.
“Hard work pays off you know. I worked hard and it is paying off," added the 27-year-old.
"For me the most important thing is the team and I have to congratulate my teammates because if it was not for them getting the good balls, I would not be able to express myself on the pitch.
"We are growing and getting stronger after every match.”
Ayew is playing at Afcon for the fourth time following appearances in 2012, 2015 and 2017.