I read this many times to my children when they were small. We talked about its meaning. Now that they are coming into adulthood and the tumult is hitting, this is a good reminder that our attitude, intent and actions mean a lot more than the circumstances we are in. In other words: It's not the hand your dealt but how you play it. Love it.
Since I first read it, some 15 years ago, I have reflected on its affect on almost daily thoughts, plans and efforts. To me the set of the soul is better represented as setting our intentions. Simply adjusting/directing my intentions and influencing the intentions of others, has set both me and some of the others on courses toward amazing accomplishments, acquisitions, and locations. I regret that I didn't come across this collection of simple, ye powerful words earlier in life.