Jordan Spieth said his six-shot victory at the Australian Open in November has been pivotal in his career development.
Spieth, who has two PGA Tour victories to his name prior to his 22nd birthday, said it was his non-US victory that he was most proud of.
The American dominated in the end at the Australian Golf Club, for his only win in 72 holes as a pro - as his two US tour titles came via play-offs.
Spieth is looking to go one better at The Masters, starting Thursday, after finishing tied for second in his first Augusta start in 2014.
And the world number four said he will hope to call on his temperament that saw him win in Australia.
"I think the Australian Open may have been the most important tournament that I've ever played in because at the time, it had been maybe a year and a half since winning the John Deere [Classic] in that play-off where I kind of squeaked in, luckily," Spieth told a news conference on Tuesday.
"And going there, to an elite field with the world number one player and obviously with the local favourites with Adam [Scott] and Jason [Day]... and then with a venue like the Australian [Golf Club], put myself in a position and just had a level of patience that I had not had when I was in contention prior to that.
"I was trying to want it too bad, trying to get off to too fast of a start and not realising the length of a round and how a final round in contention can almost feel like two rounds and you have to maintain the same patience the whole way.
"That's what we did that day. Didn't let anything get to us; the roars in front, the scoreboard changes.
"And shot arguably the best round I've ever played when tied for the lead.
"So it was a huge, huge boost for me."
It was that composure he lacked in the Masters finale that saw Bubba Watson run away to win his second green jacket - leaving Spieth in his wake.
"I guess the hardest lesson taking from last year was that I had an opportunity to make a dream come true, and I had it in my hands, and then I was just a little anxious," Spieth, the 2013 PGA Tour rookie of the year, said.
"You can make the excuse that as a first timer [at Augusta] and whatever, 20 years old, that that's likely to happen.
"But in my mind, I was playing the best through whatever it was, 60 holes, 62 holes, and had an opportunity to continue that the next ten or 11 holes and didn't quite close it out.
"So it was very disappointing, because I felt like the golf course was going to play into my hands.
"Although, obviously Bubba has a distance advantage, but I felt like the way I was putting and the way I was striking my irons, I could close it out."