As I sit and wonder

As I sit and think of my purpose here,
I come up with one thing.
I wonder if I am here to help others through this life,
to show them the direction they should take,
then it is up to them to make their choice of which direction to go.
It seems like too many come into my life for such a brief moment in time,
then leave, there has to be some reason, a purpose.
The one that I want to stay and share life with, I cannot have.
As I sit and wonder of what life is going to bring me next,
I wonder if I will end up sitting alone in the end.