Unfortunately, sometimes this is painfully easy, as in the loss of a job or death of a loved one. Other events might be more subtle. This is a time for true self honesty. If we don't know what causes a problem, it is difficult to correct it. With each of the five suggestions, don't feel like you must, or in some cases can, deal with the disappointment or setback alone.
Many situations require professional guidance and help to deal with.
If you don't know where to get help, start with a trusted friend, physician or member of the clergy. If they are not the appropriate person to assist you, they will probably know who is. If you think you need help,or you aren't sure, seek it. Again, self-honesty and qualified opinions will help you accurately answer this question. Perhaps the loss of a job is the chance to make the career change you wanted to make for years.