Given the unpredictable changes in the world and within oneself, clinging rigidly to a single "dream" is risky. Success often involves recognizing and seizing timely opportunities (things possible *now*) and remaining flexible and responsive to change, rather than just relying on passion and persistence. > ask yourself what's possible now that wasn't possible 10 years ago and which might get harder 10 years from now > -- -- Grant Sanderson > Rather than having any one particular goal that defines who you are, you'll take better advantage of whatever the future has to offer you if you remain nimble and if you're responsive to the changes in the world and if you anticipate change within yourself. > -- Grant Sanderson