Nicole Kidman and her husband Keith Urban
Actress Nicole Kidman and her husband Keith Urban arrive at the 2014 CMT Music Awards in Nashville Reuters

Dr. Antony Kidman, a clinical psychologist and father of Hollywood actress, Nicole Kidman, passed away in Singapore on Sept. 12 because of a heart attack after his morning exercise. He collapsed when he was at The Wheelhouse restaurant at The Tanglin Club.

Nicole and her family are shocked and are grieving over the death at their family home in Sydney, reported Asia One.

Keith Urban, Nicole's husband, postponed a concert to be by her side. He posted on Facebook that he was sorry that he couldn't perform.

The Kidman family has given no official statement, but Nicole's publicist, Leslee Dart, told the entertainment magazine Us Weekly that Nicole appreciated the outpouring support and that she requested privacy during the difficult period.

Keith also wrote on Facebook that they were in a deep state of grief because of the death of Dr. Antony Kidman and that they would be heading to Australia to be with the rest of the family. He also thanked everyone for their love, prayers and support.

Antonia, Nicole's younger sister arrived with two young girls, believed to be her daughters, at the family home to be with Janelle, their mother.

Dr. Kidman was in Singapore to meet his wife who lived there with her current husband, Mr. Craig Marran and their six children.

Dr. Kidman, the director of the Health Psychology Unit at the University of Technology in Sydney, was pronounced dead at the Tan Tock Send Hospital. The police are currently investigating the case of unnatural death.

According to Kids Health, coping with the loss of a close one is difficult and it is absolutely natural for one to have feelings, questions and bitterness for a while. Every person reacts to losses for a different period of time, be it days, weeks or even longer, based on whether the loss was sudden, expected or closeness to the person who passed away.

The grieving process usually takes time and at times, there is a feeling that you might never come out of it. Every person grieves differently and some might not even show it, but they keep all their feelings bottled up inside.

It is important to express one's feeling and get support while you are grieving. It is also necessary to take care of oneself and find meaning in the experience.

You can express your feelings either talking to a close friend or family or by putting into words. Writing about the way you are feeling or talking about it helps not just you, but it helps the person you talk to as well as it offers support for them. It gives them a feeling that they are less isolated.

It is of utmost importance to take care of yourself by sleeping right, exercising as this can help your mood and eating right. The stress of losing someone close could put all these small things in the back of your head, but it is necessary to pay attention to these as well.