Whether you do one or many things in a period of time, time will always move — always forward, never backwards. It’s one of few things that lies outside of our control.
You can choose to only work for a company for three years and three years will pass by. Or you can decide to work for a company while learning new skills, doing side jobs, or building projects for three years and three years will still pass by. You get the idea.
Ultimately, what we decide to do is a choice that only we can take. We decide whether to live a life doing a single thing or performing multiple actions simultaneously. We simply have to be wise to choose because time will always remain as a constant — moving forward, waiting for nobody.