Cheika said he and his assistant coaches, including Stephen Larkham and Nathan Grey, were intent on ushering in a new generation of players and would use the June Tests against Fiji, Scotland and Italy to continue building belief and team unity.
"We started this last year and copped a bit of grief with our mixed results, about 50 per cent (of Test-match wins), but with the experience they've gained and a little bit of hardship, I think they'll be better.
"I know people will say 'yeah, yeah, yeah' but we've got a good bunch of young guys in this (World Cup) cycle.
"Now it's all about creating that competition and putting the squeeze on the older, established guys."
Cheika, though, did concede the Wallabies had much work to do between now and the Rugby Championship opener against the All Blacks in Sydney on August 19.
"And that starts this weekend," he said.
"We have to change a few things, change attitudes and mindsets, but I still believe strongly in the guys we've got.
"June is going to be so important for us. There's some big Test matches and we could be playing three teams in our (2019) World Cup group.
"We've got to make some changes and turn those into little things along the way.
"I've been in teams where something just clicks and we'll make sure we find what we need to make it click so that the guys will be ready to pull on the gold jersey and do it proud."