Collins knows from bitter experience in his own formative years in football that the failures can be just as important as the successes in developing as a professional player.
"He is a superb player," said Collins, whose own commanding form has limited Clark's opportunities.
"Since he came in you could see he was going to be a great player. He's still a young boy though.
"The Newcastle game might have turned him the other way confidence-wise, but since then he's been exactly the same. He's come into training and been superb - as he always is - and he's pushing for his chance again.
"Obviously, he doesn't want to not play for a long time after the Newcastle game, he wants to come back in and show what he can do.
"I remember when I was a young player at Cardiff and we were beaten heavily. I thought it was the end of the world, but you learn more from days like that as a younger player than you do when you're winning all the time.
"I'm sure he'll look at Newcastle and try to take the positives from it."