If you are one light-year away from Earth, it means that you are at a distance of about 5.88 trillion miles (9.46 trillion kilometers) from our planet. Unfortunately, with our current technology, traveling back to Earth from such a distance is not feasible within a human lifetime. The enormous distances between stars and galaxies make interstellar travel extremely challenging.
At present, our fastest spacecraft, such as NASA's Parker Solar Probe or the Voyager probes, travel at speeds of tens of thousands of miles per hour. Even if we were to assume you could travel at a constant speed of 30,000 miles per hour (48,280 kilometers per hour), it would take you more than 200,000 years to cover the distance of one light-year.
Interstellar travel concepts, such as those proposed by scientists and engineers, involve advanced propulsion systems and technologies that are purely theoretical or speculative at this point. Concepts like warp drives or wormholes are explored in science fiction but have no confirmed scientific basis or practical implementation as of now.
Therefore, given our current understanding of physics and technology, it is not possible to provide a practical solution for you to return from one light-year away from Earth. However, it's worth noting that scientific advancements and breakthroughs may change this perspective in the future, and humans might explore interstellar travel possibilities further down the line.