Croatia kick off their campaign against Mexico on 3 June and Boksic said: "Knowing myself and my body, there should be no problems
playing in our first game.
"The main thing now is to focus on training without pushing
myself to the limits in the next 10 days.
"I am probably being too careful but I've had too many
injuries to risk now. I want to play at this World Cup."
The 32-year old Middlesbrough striker missed Euro 96 and the 1998 World Cup finals in France.
Croatia also face three-times World Cup champions Italy and
debutants Ecuador in the opening group phase.