Cahill has suffered injuries at crucial times in the past but is fully fit to attack the World Cup with England, with their first game against Italy next Saturday.
The Blues centre back is set to start in that crucial opening game and is hoping to relish every moment of what this summer has to offer.
“It does, because it is my first tournament,” Cahill said. “I have waited a long time to come and I was really excited previously.
“The World Cup before I was an outside shot of making the club and I had my blood clot.
“Then I was one game away and I broke my jaw – it was like, ‘Is this not for me?’. So for me to be involved in this is massive.
“It’s been good of late. Not that long ago I wasn’t really in the frame or I was grafting to get in the squad and just be a part of it, but now I feel like I’m a big part of it, which is pleasing.
“It shows how far I have come and I am obviously really happy.”