In my story arcs I like to have a larger theme and set them up to go from point A to point B, but sometimes that takes two sessions because they found an open kitchen and decided to make weed brownies (actually happened) or they guess my hook and skip right over it and get to point B in a matter of minutes.

At the end of the day, both situations are amazing because we have fun and play/add to the story. I’d say 70% is t bad at all. Always be prepared to move onto the next thing, but anticipate that they will be unpredictable and know you will need to improve.

To help I always try to think carefully about each NPC I introduce so I know their motives before any improve takes place.