The essence of choice lies in thinking. No major choice, including a career choice, can be divorced from thought. You sit down and you make a pro’s and con’s list of your various alternatives and after exhausting all the factual considerations you can think of, you come to a conclusion. You act on the responsibility of making a conclusion. You don’t say, ‘I can’t.’ The conclusion is the ‘act’ of choice—accepting the responsibility of choice—but of course there is extensive thought beforehand. You know the thought is complete when you have exhausted every fact you can think of, and you’re starting to rehash and repeat in your thinking.