The picture in the link was taken by Voyager 1 as it was about to leave our solar system, from a distance of four billion miles away.
In the link is an almost mind blowing piece entitled, "Reflections on a Mote of Dust" by the now deceased American astronomer, and prominent backer of SETI Carl Sagan.
It certainly puts into perspective the petty problems that make up all of our lives.
http://obs.nineplanets.org/psc/pbd.html