An obstacle only exists in relation to our preferences. Let go of preferences, and there are no obstacles - only possibilities.
The Third Zen Patriarch has it thus:
The Great Way is not difficult
for those who have no preferences.
When love and hate are both absent
everything becomes clear and undisguised.
Make the smallest distinction, however,
and heaven and earth are set infinitely apart.
If you wish to see the truth
then hold no opinions for or against anything.
To set up what you like against what you dislike
is the disease of the mind.
When the deep meaning of things is not understood,
the minds essential peace is disturbed to no avail.
The Way is perfect like vast space
where nothing is lacking and nothing in excess.
Indeed, it is due to our choosing to accept or reject
that we do not see the true nature of things.
Live neither in the entanglements of outer things,
nor in inner feelings of emptiness.
Be serene in the oneness of things and such
erroneous views will disappear by themselves.