Take a few moments to slow down. Disconnect from the busy-ness of the external world and slow down internally. 
I shared some words from John O'Donoghue's poem 'For the One Who is Exhausted, a Blessing'.

You have traveled too fast over false ground;
Now your soul has come to take you back.

Take refuge in your senses, open up
To all the small miracles you rushed through.
Become inclined to watch the way of rain
When it falls slow and free.

Imitate the habit of twilight,
Taking time to open the well of color
That fostered the brightness of day.
Draw alongside the silence of stone
Until its calmness can claim you.

Be excessively gentle with yourself.

Stay clear of those vexed in spirit.
Learn to linger around someone of ease
Who feels they have all the time in the world.

Gradually, you will return to yourself,
Having learned a new respect for your heart
And the joy that dwells far within slow time.