It's not the obsticles ahead that make you feel unstoppable, but who is behind you that pushes you forward.
![](http://stele.co/cdn/shop/files/Unstoppable-Surf-2_{width}x.jpg?v=1629214410)
![](http://stele.co/cdn/shop/files/Unstoppable-Surf-4_{width}x.jpg?v=1629215457)
Your unstoppable flow happens when the challenge ahead is so unbelievably matched to your abilities that you lose your sense of time and self to that flow.