I do this breathing practice often while sitting or lying down. It is a deep inhale and exhale with imagery. The imagery teaches you to go out into the world and live your life with a balance between being open, aware, and expansive and closed, contracted, and protected.
Both are important. Being open and aware allows you to see what life has to offer, to embrace and be free. Being closed and contracted, allows you to protect who you are in the process and to let go when something is not right for you.
As you breath, feel how the breath takes you to those places. Feel how the inhale expands the body and the mind and how the exhale draws you inward and contains the mind.
Let me know how it goes.