Ghana coach Kwesi Appiah wants to instill sterner work ethics in his team as they open a three-day non-residential training camp in Accra on Tuesday.
Appiah will get to work with his provisional squad for the World Cup in front of home fans before leaving for Holland on Saturday.
The Black Stars will play a local select side at the Accra sport Stadium on Friday in a farewell match.
"We have to ensure that everything is in line," Appiah said. "The most important period is our preparations."
"That is where we are focusing on. Once you are doing the right thing and getting the result, automatically, you will have the support.
"It [support] is crucial. And by God's grace we will get it.”
Ghana's first pre-World Cup friendly will be against Holland before the squad to cut down to 23 for the tournament.
The team will then fly out to the USA to face South Korea on 9 June.
"We need to prepare very well to make sure that we get a win," Appiah added.
Ghana will open their World Cup campaign against USA on 16 June in Group G.