I have always been a big fan of water. It is no secret amongst my family and friends that I waterfalls with a passion.
The 8th Verse of the Tao Te Ching asks us to contemplate water and its ability to nourish life without even trying. To me, water is like a physical manifestation of the energy (or Tao) that runs through everything. It has the amazing ability to move mountains with its power, yet is gentle enough to bath an infant. Water can take any shape, and has no problem changing course on a moments notice. I believe that's where we get the phrase, "go with the flow." This is a fine example of the Taoist teaching of nonaction. The water does not resist the obstacle, it finds another way around the problem.
A Taoist practicing in life would not be easily upset by anything, trusting that everything is unfolding as it should, and merely looking for the alternative route around whatever problem presented itself.