The Introduction - (first few lines...)

"Prayer is an exercise. It takes practice and, just to cheer you up, takes a lifetime to perfect.
It brings with it times of great insight and joy   
and times of utter boredom and irritation."

And part of the mini-mantra that introduces the Fresh Air Prayer of the fifth Week of Lent:

                    "Breathing in gently                    Breathing out
                    Lord, open my mind                 that I may know Your Presence
                    Open my heart                         that I may feel Your Presence
                    Open my eyes                          that I may see Your Presence..."