Obstruction

What  to do if you have obstructionist in your work place ...
If you are on a rowing team to succeed you all have to be rowing in same direction, same on your work team, if someone is rowing in the opposite direction they are obstructing progress.
You must remove the obstruction , first you need to train of the importance of being a team player and tell them what it have observed, next they need to know what the result will be if they continue to obstruct, next DO IT !
Just like a parent of a small child do not threaten if you do not intend to back it up, so while you are training and alerting , you need to be prepared to move.
Always have a plan B
Maybe the person can be better in a different role ? That is something you need to ask and something you need to evaluate.
Now here’s is the real big challenge- what do you do when the major obstructionist is the lead guy, the boss ?