This song helps me get through those lows.
Not only is it a beautiful and relaxing arrangement, but I also find the lyrics to be very comforting. Especially this little chunk...
remember to keep warm
take shelter from the storm
the night will not last for much more
I wrote in a small note
put on your winter coat
a cold wind will blow through your door
night will follow day
sure as the sun and moon
remember I will always be with you
just fold your hands and pray
and I am beside you
tell mother I'll help to see you through