Unachievable result

If I put ‘I am an astronaut’ in my R line, I can realise the actions I would need to take, the feeling I would need to generate and the thought I would need to have. I could believe that becoming an astronaut is achievable…. but it’s not! I am too old to start the required training (fact) and I would not pass the medical exam (fact). So how can I create any result I want in my life, even one that is (perhaps less far-fetched but still) unattainable?