Prince William has revealed he was "very angry" following the death of Diana, Princess of Wales.

William, 34, spoke openly during a visit to an east London bereavement centre with Kate where they sat down with families making memory jars in honour of a loved one who has died.

The Princess of Wales was killed in a car crash in Paris in 1997 when Harry was just 12.

[Read more: 12 times Prince Harry proved he's the best royal]

But how do you deal with grief? How people react will vary hugely; grief is a painfully personal thing, and no one really knows how they will react until, for whatever tragic reason, they’re suddenly forced to stare it in the stark, painful and unbearable face.

“Everyone experiences grief differently and there is no 'normal' or 'right' way to grieve,” stresses Cruse Bereavement Care the country’s leading grief care charity.

There’s no normal

Ann Rapstoff, counsellor and psychotherapist agrees: “Grief is individual; it is not a one-size-fits-all experience.

“The traditional model of bereavement as espoused by pioneers in grief counselling such as Elisabeth Kübler-Ross, involved the five stages of grief: denial, anger, bargaining, depression and acceptance. This was by no means a linear model; she used this as a guide in which the person grieving might move in and out of these stages.

“More recent research on bereavement now suggests a more fluid process in which we do not necessarily conform to a series of stages or ‘a journey of recovery’. Grief is now seen as part of the human condition, so one’s response to a loss or bereavement is normal and healthy.”

‘You will feel overwhelmed’

“You may have lots of overwhelming emotions,” says Jacqui Graves, head of health and social care at Macmillan Cancer Support.

“As well as extreme sadness, you may feel numb, find it hard to believe that the person is dead or feel angry that the person has left you, or that other people, such as family members or health professionals, were unable to stop them from dying. Some people feel emotions of guilt or are relieved that their relative or friend can now be at peace.”

Give yourself time

“The first step to coping with loss is to allow yourself time to grieve. Patience with yourself is extremely important,” advises Sloan Sheridan-Williams, wellbeing and life coach and bereavement consultant. “By its very nature, grief is self-limiting and there is light at the end of the tunnel.”

[Read more: Princess Diana’s beauty secrets revealed]

Give yourself a big plan

Sheridan-Williams adds one crucial element of coping with grief is finding a purpose again – preferably with other people. “For example, turning to friends and family or support groups can help increase your connection, or drawing a sense of peace from your faith will provide you with increased certainty when you are dealing with questions of why and how could such a loss occur.

“Talking to a therapist or coach can help you create variety in your life and, for those who are more sporty, you could even think about raising money for a cause by signing up to a charity event which will provide significance for you and the person you cared for.”

And some small ones

“The second stage of coping involves learning to ask for help and making sure steps are put in place to look after you,” Sheridan-Williams continues. “Facing your feelings is important so long as it is at the right time and pace for you.

“Look after your mental, physical and emotional wellbeing during this time, so that you do not let routine health matters escalate. Also make sure you plan ahead for triggers and are prepared, be it with tissues, exit plans or a good friend for support when you are in difficult situations revolving around the loss.”

Never do it alone

Grief can feel isolating; intolerably so. But it’s fundamental you remember you are never alone.

“If you are struggling emotionally, you may wish to talk to your GP about your feelings of depression and explore pharmacological interventions which could help you in the short term dealing with your grief. The important thing to remember is that no matter how isolated you feel, there are always people out there who are able to support and help you.”