flip this, decide your mind will "invent something that you can and will make now, doable and appropriate for your current situation in life" and just keep obsess over, with feeling.

get back to me in month or year. everything can and will change

i had this with solar powered LED light, for areas without power, so people can do stuff at night. tolf not doable, failing grade. later found proff won award for similar idea. one of several reasons i dropped out.