Passion. It all comes down to it. Loving what you do will *not* make it easier, but it will keep you going through the rough bits. And, over time, you might even gain enough confidence to be able to step back during the rough patches an remember the good times, the times you have helped others. Just like you did now.
Thank you for this genuine reminder that we all have doubts under the shiny exterior. (great illustration going around on Twitter this week via @markdabrowski https://twitter.com/markdabrowski/status/631534999049605120)