Flex and un-flex, the POWER in choice is here:

"Adopt an attitude of flexibility. If there's one emotion to cultivate to guarantee success, it's the ability to change your approach. Throughout your life there will be situations you won't be able to control. Your ability to be flexible in your rules, the meaning you attach to things, and your actions will determine your long-term success or failure, not to mention your level of personal joy". -Tony Robbins