You can't
Edit 1: Changes pic to a more reasonable one.
Edit 2: LOL quit hating cause you can't time travel.
Edit 3: Did…recon…just…replied…^~^
-
A scientist was working hard on his time machine. His colleagues scoffed him, saying this was an impossible feat. Not the one to be easily deterred, the scientist kept working and finally perfected his time machine. His first test was going to be a modified version of the Grandfather Paradox. Even he knew that he couldn't kill his grandfather without creating a paradox, but he wondered what would happen if he went back in time and killed himself instead. He got a gun, set his time machine to five days earlier, and away he went. When he stepped out of his time machine, he walked to his office; he saw himself sitting at his desk, not paying attention to the door. He drew his gun, shot the version of him sitting at the desk, and returned to his time machine. He returned to his time, collected data from his time machine, and returned to his office. He sat down and began to analyze the data. He hadn't disappeared, so he must have avoided a paradox. "Eureka!" he exclaimed, but his moment of triumph quickly turned to despair and horror. The reading from his time machine showed there was a glitch. Instead of traveling five days into the past, he had accidentally traveled five minutes into the future. He did not have much time to find a solution; he heard his door creak open followed by a gun shot, and everything went black.