Whenever I stopped long enough to reflect on such questions as “Why am I here?” and “What is my purpose?” the answer seemed pretty clear. I actually found it long ago in some lines by Clarissa Pinkola Estes, words I’ve quoted often because they’ve served me so well as a kind of north star, timeless wisdom by which to navigate:
“Ours is not the task
of fixing the whole world at once
but of stretching out to mend
the part of the world that is within our reach”
Katrina Kenison, Mending the world
Mindfulbalance 
Most people try too hard to change the whole world. To achieve greatly. And they don’t know how to do it, and they just end up doing nothing at all.
Little by little, a little becomes a lot.
Changing just that little bit of universe around us. It makes a difference. It gains momentum. You never know.