Letsoaka, 55, remains the only coach to have guided an SA national side, across all levels, to the World Cup quarterfinals. He achieved this rare feat with Amajita at the 2009 U-20 World Cup in Egypt.
It was a 2-1 defeat at the hands of Ghana in the last 16 that eventually saw SA exit the global showpiece.
"Our players at that time  had that mental strength that we lack today. The guys such as Thulani Hlatshwayo, Thulani Serero and Ramahlwe Mphahlele all have the right mind-set even today," Letsoaka explained.
While he confirmed he'll definitely leave when his contract expires, Letsoaka took pride in the Zebras' win over SA in the Cosafa Cup quarterfinal on Sunday.
"We are still building the team, but beating Bafana shows we are on a right track. As the technical director, I am very proud of the team. But I will leave at the end of my contract," said Letsoaka.
"It's a three-year deal, today marks a year since I came here. I have two full years left. They want me to stay, but I won't."