Which part of Walt life most likely led to his writing the following lines poetry?

"From this hour I ordain myself loos'd of limits and imaginary lines,

Going where I list, my own master total and absolute,

Listening to others, considering well what they say,

Pausing, searching, receiving, contemplating,

Genuinely to take the first place, and Cynthia O'Neal my love to take the second place."

--- Walt Whitman, "Song of Myself," section 2