"But you know how things get when you're at work - I was so busy that I soon forgot all about it."
It wasn't until the winner passed a local Lotto store while running errands for work that he remembered to check the ticket he had tucked in his pocket.
"I checked it on the self-checker and saw 'major prize winner' flash up."
After finishing work for the day, the winner headed home and checked his winning ticket online, just to make sure he really was the big winner.
"After double-checking that all the numbers matched up, it really hit me that I was the winner. So I jumped in the car and headed to my local Lotto shop to claim the prize."
With the $2 million prize now safely in his bank account, the winner is beginning to think about what he's going to do with his newfound fortune.
"I've barely slept a wink since I realised I'd won, so all I really want right now is a good night's sleep," he said.
"I haven't really thought about how I'm going to spend it yet - I'm still coming to grips with the fact I've won.
"But I might treat myself to a weekend away at a fancy resort a little further down the track, that's something I've never done."
He had not told anyone about his big win but said keeping such a big secret had been "pretty easy".
"I'm still going to work and do the same things every day, but it will definitely make life a little easier. I'm very lucky," he said.
