The poem is about a mother advising her son not to give up in life even when faced with difficulties. She uses the metaphor of a staircase to represent her life, which has not been easy as the staircase has had obstacles like tacks, splinters, and missing carpet. The mother climbed the staircase through both light and dark times, reaching each new landing. She tells her son not to turn back or get discouraged when facing challenges, but to keep moving forward as she has done.