This happens when living in the moment, while at the same time focusing on the past. Trying to pick up pieces from the past ultimately leads to hitting walls in life. Living in the moment with a right attitude will set you on a correct path.
While on a road trip, you may find yourself so focused on the final destination that you miss detours along the way. It's frustrating to wait for the next exit, only to turn back around after realizing you overlooked a critical turn.
Now parallel this with your vision. If focusing too far ahead while trying to plan everything out perfectly, you may miss important steps along the way. Too much concern over the final outcome won't allow you to enjoy the process. It's great to plan, but the next step may not be revealed until you've completed the last one.
In short, don't turn back. Leave the past in the past. Carry memories. Pack up lessons. Bring courage. Step into the moment. Don't dwell on how far you have to go. Reflect on how far you've already come. Enjoy the journey as you head to your destination. Make the most of today.