You can never tell what is around the corner.  One minute we may be doing well in our job, business or social life the next minute, without warning, all that changes.  The way in which we deal with these changes in our lives is pivotal to our ongoing success.  How do you respond when things go wrong?  Who do you blame?  What do you do with the negativity that you feel?  Keeping things in perspective and applying positive thinking in any situation will help you.  Having an optimistic view and high levels of emotional intelligence will also be of great value in getting through lifes challenges.