1. of the limits and limitations of many others one has known in one’s life (even those who are close) –particularly in their choices, freedom, and own (human) nature. (People are what they are, regardless of whatever positive possibilities they never actualize.)
2. eventually, of the aging process and one’s own increasing limits and limitations. One can only do so much, timewise, in particular. (Focus and maximization of dreams and one’s own freedom become central as one ages.)