The South African admits his St Andrews triumph took some getting used to, but the 28 year old feels he is now back to his best.
"It's been a fun year, it had ups and downs," he said ahead of this week's BMW PGA Championship.
"You know, it was mostly positive things that were being announced every week on the tee. It's been a good year - learned quite a lot this year and I'm just looking forward to the rest of the season.
"My form was quite good last year after the injury, it was still there, and then earlier this year. But just faded a bit away and I knew it was going to be a tough season playing both tours.
"It's a lot of travelling and a lot of new courses and you know it's just getting used to everything. Hopefully next year will be a bit easier.
"Golfing wise, my game on the golf course was quite good earlier in the year. First week in January, winning the Africa Open, and then just started fading a bit away like I said. Confidence is still there. Just working on a few things in the swing and it's getting there again. I can feel it's almost there and it's just a matter of being patient."
Oosthuizen has never finished better than 40th in the BMW PGA Championship, but hopes his accuracy off the tee can get him into contention.
"I played nine holes yesterday, and I'm going out this afternoon and it's always a good track," he added.
"You have to hit it good off the tees. The greens are firm, running really nice and I think it's going to be a good week again.
"I like to raise the bar always, and to have big goals and it's just a matter of probably getting back to playing and just to have small goals weekly and monthly, and just to get back into the rhythm of playing good golf and having a bit more consistency.
"Other than four Majors, this is the next big one for Europe just as The Players Championship is the next big one for Americans. This is a great event - just look at that trophy, all of the names on it. It's one of those you work on the whole year to get."
Having famously purchased a new tractor after winning The Open Championship, Oosthuizen revealed he has taking his love of farming a step further, having started a cattle-breeding business with his brother.
"Me and my brother just started cattle breeding," he added. "It's something completely different. Something I don't know much about - but he does, so it's good fun. It's something completely away from the game."