Flexibility is the ability to revise plans in the face of obstacles, setbacks, new information, or mistakes. It involves adaptability to changing conditions.
When a person has difficulties with flexibility, it may be hard to:
think of new ways to approach a problem if the first way doesn’t work
wait their turn
change plans at the last minute
transition from one environment to another
deal with disappointments
tolerate when someone else doesn’t follow the rules when playing a game