Our default position is ‘ah but..’
We look by habit for what won’t work with a new idea. We say ‘yeah but, what if this happens…’ or ‘yeah, but I’ve tried that…’.
That does not mean we should not question things and look for challenges. But more often than not, until you try something you won’t know what the issues might be, other than the glaringly obvious things, which can easily be remedied before pressing the launch button.
The reason for this is our habit of building a cast iron defense for justifying our position of fear of starting or trying new things.
Best thing is to just go, try it. Then learn what doesn’t quite work, modify and carry on. Form new habits.
It is a mindset thing, change the default to that will work from what won’t work.
Philip Dodson 
So true..😄