But there are secrets of managing that process that enable you to keep your money earning interest while the credit card interest stays near zero. For now, you'll have to get the details from the book. Ruthlessly figure your home costs. This number is the wall. Financially plan your trip and replan it again and again until you're no longer trying to go over, under, or through the wall.
Confidence is the only real path through the minefield of monetary concern.
The only way to get it is to earn it or to be a bit of a fool. As long as I get close and build in margins here and there to absorb my mistakes, I travel anxiety free. You can too.