The title says it all, security is an illusion. Nothing is set in stone.
The only way to deal with the fear of the unknown... I honestly don't know. That's why sometimes, I just leap. Coz if I stay to look, I might just end up in a loop, standing at the same spot, looking, looking, until, as you said, change forces me to leap (which isn't always cool)
So it's better to embrace change as it comes and focus on the things that make you happy and fulfilled
Exactly, if you don't like where you land, keep leaping. :)