Trapped by Feelings

Recently there has been a recurring theme to my life.... one of loss and rejection. I lost the marriage that I thought would last forever. I lost the step son that I believed that I was in his life to make his life better, I lost the job that I believed in and thought I was making a difference. I have been rejected by men, by jobs and by people whom I considered friends. I have had to deal with the fact that I am never going to have relationships with some family members that I grew thinking that time would heal.
I am looking for work, looking for a purpose to my life, looking for something to believe in. Each rejection, whether it be family, friends, members of the opposite sex or potential jobs that don't want me, I feel myself losing a piece of my spirit. I know that a lot of what I am going through is that this is a stormy season for a lot of people and isn't something to be taken personally, but how do you not take things personally when it is you they are saying no to?
Every rejection gives me that feeling that it is ME that is not worthy, not wanted and not special enough. How do I overcome these feelings of inadequacy and restore myself to the person I am suppossed to be? I feel trapped and I am hating the fact that I feel weak and that I have let this self doubt creep in and muddy the waters of my life.