The five stages of loss and grief are denial, anger, bargaining, depression and acceptance. According to the Kubler Ross model, these stages occur when someone experiences a death, the loss of a relationship or a similar loss.
The first stage of grief is denial, where people deny the situation to combat the emotions they are experiencing because of their loss. Following this comes anger, which occurs when the effects of denial begin to wear off. Anger involves an outpouring of emotions from the suffering person, who may feel angry at the person who left them. When anger finishes, people enter the bargaining phase. This can involve bargaining with God to ask that the lost person be returned, or they may experience "if only" thoughts. For example, they may think that the person could have lived if only they had encouraged the person to go to the doctors more.
The fourth stage of grief is depression, which arises when people must face the practical aspects of their loss. During this stage, the person who is grieving requires a lot of care and attention from loved ones. The final stage is acceptance, which may involve the sufferer withdrawing from depression and feeling calm.