Daniel Vettori said New Zealand would not panic after Kane Williamson's side suffered their first defeat of the tournament against Pakistan at Edgbaston.
New Zealand had the chance to secure their place in the semi-finals alongside Australia but were undone by some quality batting from Babar Azam and Haris Sohail.
"The one thing New Zealand won't do is panic after the defeat to Pakistan. This team doesn't panic and hasn't for a long time," said Vettori in a column for the International Cricket Council.
"They have been playing a style of cricket that has delivered success and they have won five games out of seven, with one washout."
"That success breeds confidence and calmness, so there is no point in changing strategy just because of one loss" he added. "They will stay true to how they have played for a number of years."
Vettori said the tournament was exciting given there was support in the pitches for the bowlers.
"The traditional road we've seen in one-day cricket, where 350 plays 350, is not quite as prevalent and it makes for an exciting game," he said.
"It brings the spinners into play and brings the bowlers in general into play. It allows real batsmanship to be on display. We saw that from Babar Azam, who was just exceptional."
New Zealand's next clash is against reigning champions Australia, who currently sit at the top of the points table.
Vettori warned New Zealand against the duo of Warner and Finch as dismissing both the openers would be very crucial.
"The big challenge in the next game against Australia at Lord's will be Aaron Finch and David Warner -- they have been exceptional in this tournament," he said.
"They have set Australia up. No one else has had to bat that much. The ability to dismiss those two early on will be crucial and more often than not, that falls on Trent Boult to do that."