..... Maintaining a friendship need effort from both parties,
you must want to be a friend first and let the other person
response, liked putting the ball on the other side of the court. If
he/she hit the ball back, you response in kind, if not, no matter
how you scream or shout, the ball will never move and the game of
friendship is over.
The reasons you can't keep a friendship might dued to some
emotional baggages you are currently carrying. Is it that you had a
bad childhood, or is there any misgivings between you and any of
your family members or have you been abused by someone closed to
you?
These are some of the reasons that can caused dis-trust in you, you
are always suspect of people who really meant well to you. This
alone would kill off any potential friendships. Trust in
friendship, don't think people are always out to harm you. Also
must willing to accept your friends' faults and flaws, nobody is
perfect. The most important thing is to accept yourself first, get
in touch with your feelings, find out the root of the problems. You
can't expect your friends to act and think like you do, no two
humans are aliked. Accept that each and everyone is different. The
more you expect what your friends are supposed to do, the outcome
is only one word....disappointment. From disappointment came
resentment on your part and then the friendship turned sour. Learn
how to trust yourself and your feeling first......... 
