People get the definition of ambition very wrong. The idea of it is less fear and alternatively, less ego. The more egocentric your motives are, the greater the pitfalls are towards fear(fear of failure, fear of criticism, losing face, reputation or pride). The idea is to surrender and become captive to an idea, expression or cause. In that we find that to serve not only serves us, but others as well.

the layers

I have walked through many lives,
some of them my own,
and I am not who I was,
though some principle of being
abides, from which I struggle
not to stray.
When I look behind,
as I am compelled to look
before I can gather strength
to proceed on my journey,
I see the milestones dwindling
toward the horizon
and the slow fires trailing
from the abandoned camp-sites,
over which scavenger angels
wheel on heavy wings.
Oh, I have made myself a tribe
out of my true affections,
and my tribe is scattered!
How shall the heart be reconciled
to its feast of losses?
In a rising wind
the manic dust of my friends,
those who fell along the way,
bitterly stings my face.
Yet I turn, I turn,
exulting somewhat,
with my will intact to go
wherever I need to go,
and every stone on the road
precious to me.
In my darkest night,
when the moon was covered
and I roamed through wreckage,
a nimbus-clouded voice
directed me:
β€œLive in the layers,
not on the litter.”
Though I lack the art
to decipher it,
no doubt the next chapter
in my book of transformations
is already written.
I am not done with my changes.

-Stanley Kunitz