There are two ways to approach something important. Either start with a lot of details and get everyone overwhelmed or agree on the big picture first and let details be worked out later.

I have found in many business deals, when we focus on agreeing on the big picture, the rest becomes easier as you narrow down on the key areas of contention.

When you start with details you can end up all over the map that by the time you come to the crux you are exhausted.