"No one told me this, but I instinctively figured it out on my own: never pay mind to the clock. When you are first starting out at a job (and even when you are settled into a company), stay as late as you can and also always be the first person to work in the morning. This is obviously easier to do if you love your job, but even if you are in an assistant or entry-level role, you must understand that putting in the extra time will move you closer to what you want to do. One of my first jobs in New York was for YM Magazine, and although I was technically hired for only three days a week, I would always log extra days no questions asked; it was hard work, but it taught me so much while also making me stand out."
Source: LinkedIn Author Rachel Zoe