Becoming an established member of the Indian Test team was helping Gautam Gambhir [Images] score hundreds and hundreds of runs, the opener said on Sunday.

Gambhir scored his sixth Test century when he notched 167 in India's 349 for five at the close of play on the third day of the third test against New Zealand [Images] on Sunday, giving the visitors a massive 531-run lead and the opportunity to add more on Monday.

Gambhir has scored 445 runs in the three-match series, at an average of 89.

He batted for 642 minutes in the second innings of the second Test at McLean Park to score 137 and ensure India drew the match after following on more than 300 runs behind.

"I'm much more comfortable. I'm more secure in the side which is very important for any cricketer," Gambhir told reporters.

"When you're playing for your place in the side it is very tough, you don't play our natural game.

"Once you feel like you belong it becomes much easier and you play your natural game and you enjoy yourself, which is very important because international cricket is all about pressure.

"If you can enjoy yourself in that pressure then it really helps."

It is not just the New Zealand attack the 27-year-old has taken a liking to.

Since India's home series against Australia [Images] last October, he has scored 1269 runs in eight test matches at an average of 84.6, including a double century, four centuries and four half centuries.

He said the 206 he scored in the Test against Australia in Delhi [Images] last October had helped his mental preparations for each subsequent innings.

"Since then I have not taken any inning casually because any inning I play for my country is very important and you just can't take your place for granted," Gambhir added.

"I always start on zero which is very important because I'm thinking that even if I scored a hundred in the last innings I'm not be going to carrying that into the next innings.

"I will again start from zero."