The only real battle in life is between hanging on and letting go.
Maybe, if you can't get someone out of your head they were never meant to leave. Perhaps, they were meant to help change you into the person you have been waiting to become.
What have you got to lose? What are you hanging onto? Trust. You have not come this far to turn back now. You are almost there. Have faith.
Once you embrace your value, talents and strengths, it neutralizes when others think less of you.