Charley Hoffman is sure he will learn from past mistakes if he is in the final group in the third round of the Masters on Saturday.
The American hit a sublime seven-under 65 on Thursday to take the overnight lead, but struggled in the gusty Augusta conditions during his second round and eventually signed for a 75.
That left Hoffman on four under par for the tournament, joint clubhouse leader with Sergio Garcia, and well in contention to head out last for round three.
Two years ago, Hoffman was playing alongside eventual winner Jordan Spieth in the final pair on the penultimate day, before eventually finishing joint ninth, and he says that on that occasion he was not aggressive enough in his play.
"It's just about building off what I did two years ago. I got tentative with the putter," he said after his second round. "I don't think I'm going to get tentative with the putter on the weekend this year.
"I learned from that. You learn from your mistakes. When you get in position, you've got to be aggressive. I've said that. But when you get downhill sliders, you're going to have to just creep them over the edge.
"The last time a couple of years ago, I got tentative even on the uphill ones, and you can't be afraid to hit a putt three or four feet by at Augusta National because if you don't, you don't really have a chance to make a putt.
"But I've learned, I know tee to green, a couple years ago, I was as good as anybody and this week. I feel pretty solid with everything. When I get out of position, as I said, I've just got to get back in."
Asked what it would mean to win a green jacket, he added: "It's what you play golf for to win major championships.
"Obviously as a kid, you want to be on the PGA Tour and play on the PGA Tour and just win a PGA Tour event. And as you go a bit deeper in your career, you want to contend in majors.
"I've contended in a couple majors and obviously being in position going into Saturday here at the Masters is going to be special.
"I'm not going to put too much pressure on myself, but I'd be lying to say it's not a great feeling and a great spot to be."