Ms Rzoska said it was important - particularly for children - to keep a level of normality happening in their lives.
"People will be more stressed. Their bodies will be going into emergency alert. So every time there's a noise or a building shakes, they're going to react. They're going to be quite tired and on-edge.
"They should try to keep up any normal activities or routines, because quite often there's a sense of loss."
Psychologist Nikki Duke said a lot of people would be feeling jumpy and hypervigilant.
"There will be a lot of fear of doing things that they normally would not have thought twice about. There will be a fear of leaving children and being worried about children all the time."
NZ Principals' Federation president Phil Harding headed a school in Christchurch during the February, 2011, earthquake.
He said it was still too early to determine whether or not children in Wellington would be heavily affected by Sunday's big quake.
"They will be dealing with the now. That will be fixing the damage ... and the adrenaline is very high and thinking: 'We can deal with this and we're okay'. The stress doesn't come until the quakes keep coming and on and on it goes."
Mr Harding said the difference between youngsters in Christchurch and Wellington is that the February 2011 earthquake struck while students were at school.
"When the February earthquake happened, every kid in Christchurch was in school having their lunch. So school became front and centre of their thinking about the earthquake, because they would think about where they were and who they were with."
Trade Me spokesman Paul Ford said there was 40 times more searches for "survival kit" on the site in the 24 hours after the quake struck.
A spokesman for the Lifeline counselling service said they had received about a dozen calls from people in Wellington following the earthquake.
• Be prepared. Have an emergency kit, warm clothes and sturdy shoes ready at all time.
• Talk about it. Keeping emotions and feelings in won't do anyone any good.
• Stay calm around children. Explain in easy terms what is going on.
• Try to maintain normality and routine.
• Look after yourself. Limit alcohol intake, eat healthily