How Do You Rebuild Your Life When the Plan You Spent Years Following Stops Making Sense?

Starting over can be frightening because it may feel like all those years were wasted. But perhaps those experiences still gave us skills, lessons, relationships, and a better understanding of what we actually want. The difficult part is accepting that changing direction doesn't necessarily mean you've failed. If the plan you've followed for years suddenly stopped making sense, how would you decide what to keep, what to let go of, and where to go next?