A retired airline pilot told me something when I started training that I still think makes a ton of sense. "If you are addicted to flying, can't envision yourself doing anything else, and are willing to make big sacrifices to see this dream come true, go for it. You will make it. If there's any even teeny-tiny doubt in your mind about whether flying is for you, do something else. This career will reward the people who dream about airplanes and burn everyone else."