According to the theory of relativity, it is not possible for an object with mass to travel at the speed of light. The theory predicts that as an object with mass approaches the speed of light, its energy requirement becomes infinite. Therefore, for any object with mass, including humans, it is impossible to reach or exceed the speed of light.
However, let's explore the hypothetical scenario of traveling at the speed of light to see the consequences. If you were somehow able to travel at the speed of light from the moment of your birth, from your perspective, time would appear to stand still. This is because, at the speed of light, time dilation would be infinite, and time would not elapse for you.
However, from an external observer's perspective, time would continue to pass normally. So, while you would perceive no time passing, the rest of the world would experience the passage of time. From their perspective, you would not have gone anywhere in terms of distance.
It's important to note that this hypothetical scenario violates the principles of relativity, and it's not possible for an object with mass to travel at the speed of light. The speed of light is the cosmic speed limit, and it has significant implications for our understanding of space, time, and causality.