There are plenty of phrases and idiomatic expressions that can be used as synonyms for "shifting gears," such as changing tack, altering course, adjusting direction, switching focus, pivoting, adapting, or transitioning. These phrases all refer to altering one's approach or strategy in some way, whether it's a sudden change of plans or a gradual shift in direction. Other synonyms might include repositioning, realigning, reorienting, revising, or modifying, all of which suggest making a deliberate and calculated adjustment to one's trajectory. Whether in business, politics, or personal relationships, the ability to shift gears and adapt to changing circumstances is a valuable skill that can lead to success and growth.