Five Stages of Grief - Elisabeth Kübler Ross

EKR stage	Interpretation
1 - Denial	Denial is a conscious or unconscious refusal to accept facts, information, reality, etc., relating to the situation concerned. It's a defence mechanism and perfectly natural. Some people can become locked in this stage when dealing with a traumatic change that can be ignored. Death of course is not particularly easy to avoid or evade indefinitely.
2 - Anger	Anger can manifest in different ways. People dealing with emotional upset can be angry with themselves, and/or with others, especially those close to them. Knowing this helps keep detached and non-judgemental when experiencing the anger of someone who is very upset.
3 - Bargaining	Traditionally the bargaining stage for people facing death can involve attempting to bargain with whatever God the person believes in. People facing less serious trauma can bargain or seek to negotiate a compromise. For example "Can we still be friends?.." when facing a break-up. Bargaining rarely provides a sustainable solution, especially if it's a matter of life or death.
4 - Depression	Also referred to as preparatory grieving. In a way it's the dress rehearsal or the practice run for the 'aftermath' although this stage means different things depending on whom it involves. It's a sort of acceptance with emotional attachment. It's natural to feel sadness and regret, fear, uncertainty, etc. It shows that the person has at least begun to accept the reality.
5 - Acceptance	Again this stage definitely varies according to the person's situation, although broadly it is an indication that there is some emotional detachment and objectivity. People dying can enter this stage a long time before the people they leave behind, who must necessarily pass through their own individual stages of dealing with the grief.

(Based on the Grief Cycle model first published in On Death & Dying, Elisabeth Kübler-Ross, 1969. Interpretation by Alan Chapman 2006-2009.)

Dr Elisabeth Kübler-Ross was born in Zurich, Switzerland, on July 8, 1926.  Kübler-Ross studied medicine against her father's wishes, at Zurich, later settling in the US in 1958 and becoming a US citizen in 1961.

"It's only when we truly know and understand that we have a limited time on earth - and that we have no way of knowing when our time is up, we will then begin to live each day to the fullest, as if it was the only one we had."

Source:
www.ekrfoundation.org and www.elisabethkublerross.com.