I think she [Michelle Obama] is reluctant to date someone she's above at work. It's 1989, she's at a law firm, surrounded by mostly white men, and she has to prove herself every day.
What yoga philosophy and all the great Buddhist teachings tells us is that solidity is a creation of the ordinary mind and that there never was anything permanent to begin with that we could hold on to. Life would be much easier and substantially less painful if we lived with the knowledge of impermanence as the only constant.