change tack

To employ a different method or approach in addressing a particular situation. They have not been receptive to our offers thus far, so we need to change tack. If diplomacy doesn't resolve this conflict, we will need to change tack and try a more aggressive approach. Luckily, I had diversified a lot of my revenue streams before the economic crash hit, so I was able to change tack and withstand the blow better than the large companies that had no room to maneuver.