No matter how much you prepare, something will go wrong. Things will get out of hand and there are times where you wouldn’t know what to do, and that’s ok. Financial projections are a thing of fiction.
Yes, shit happens. Listen to your customers, adapt, pivot, adjust, improve, survive. Slack started as a side project and now it’s worth $1 Billion, Instagram started as a Foursquare clone. Play-Doh started as a wallpaper cleaner. Here’s 14 more if you haven’t had enough.
Shit happens, your plan fails, and that’s ok as long as you adapt.