Dr Elisabeth Kübler-Ross pioneered the idea of the five stages of grief (not always death but any major loss): denial, anger, bargaining, depression and acceptance. Today many people are facing serious emotional trauma from job loss, enforced relocation, financial issues and bankruptcy to name just a few. However this 'grief cycle' can actually be a 'change model' for helping us to understand and deal with change and grief. Interestingly Kübler-Ross also identifies that one person's despair (a job-change, or loss) is to another person’s delight.
To me this explains how and why 'time heals' all and when we know more about what is happening, then dealing with it is made a little easier. For more check out: http://www.ekrfoundation.org/