Most opportunities show up way before you're ready.
And by the time you're ready, those opportunity are usually already gone.
So instead of waiting until you're ready (you'll never be), just go with it and try to figure it all out along the way.
After all, if you never make that first step, you'll never really start walking.
And if you never really start walking, you'll never end up anywhere else other than the place you already are today...