And no, it's not that MINDSET is magic. It does not, on it's own, fix any problems. But it can sure as hell stop you from solving them. Even permanently if you let them. And a strong, positive mindset can give you the courage and confidence to think outside the box, to believe things that seem improbable and find solutions that you wouldn't have stumbled upon otherwise.
But seriously. Marry that fucking dream. That's it. Be fully committed to it, even when it makes you want to pull your hair out, or feels like you've made a terrible mistake, or gets so rocky that you run off (alone) to a super-expensive yoga/meditation retreat 15 hours away to clear your head and decide whether you can even continue on. Be so committed that through all the good times and the bad, you always come back to the commitment eventually, with a renewed sense of passion, belief and determination. This is your silly, messed up dream, remember? You married it for a reason.