The former Ghana striker spend two weeks on attachment at Sunderland and says the opportunity to meet and observe one of the most highly rated managers in the premiership has worked magic for his confidence.
Kotoko are in an international partnership agreement with Sunderland and Kondadu says his trip there to observe the workings of O'Neil has been helpful.
"It was more or less orientation that the manager gave me. He made me to believe in myself and do what I want. I am more confident in myself than I was previously. They just need to give us time and we would build this club into a really strong one," the Kotoko boss said.
Kotoko have been in fine form since the start of the Glo season winning two tricky games against Medeama SC away from home and Liberty Professionals in Kumasi.