The Puzzle of Motivation

I have magic in my fingers
I have joy in my heart
I have ideas in my head
But I don't always start

Towers I can build
Fields I can till
Mountains I can move
But only if I will

I am every woman
I am every man
Who is not creating
Even though they can

At the heart of this puzzle
Is the power of choice
We won't really sing
Till we use our voice

But to use our voice
We should want to use it
And this wanting is a fire
Which needs to be lit

But who will light it
That is the key
That is the question
That can set us free

Is it something outside
That we need to find
Or simply just a matter
Of making up our mind