How often do you prepare for things?  Rather it be meal prepping for the week, preparing for a test, preparing for a job, preparing for your calling.  You must prepare in order for it to be successful.  For me personally, if I don't meal prep for the week, I fail miserably at not having healthy foods to eat and I'm more likely to run out and get fast food for lunch.  

Preparation takes prayer, preparation isn't always easy.  It takes discipline and obedience.  But God prepares every detail in our lives just like He's preparing a place for us.  Think about Noah and the preparation that took place prior and during building the Ark.  God trusted Noah and Noah prepared for exactly what God asked of him.