Monday mornings are the most critical time of the workweek — they set the stage for the day and week ahead."Because you've stepped away for a couple days, these back-to-work mornings are the most memorable for the rest of the week," says Lynn Taylor, a national workplace expert and the author of "Tame Your Terrible Office Tyrant: How to Manage Childish Boss Behavior and Thrive in Your Job." "They influence your mindset in a positive or negative way, depending on what actions you decide to take," Taylor says.Most successful people are keenly aware of the typical Monday-morning workplace dynamic of unanticipated events, overflow of communications, and general chaos. "But after weathering hundreds of them, they realize they must gain control and stay upbeat," Taylor explains. "They take extra steps to compensate for this busy time of the week, and apply their best management skills to ensure that the day unfolds as smoothly as possible."Here are 16 things successful people do on Monday mornings:1. They wake up early. Successful people go to sleep at a decent hour on Sunday night, get a good night's sleep, and wake up early Monday morning. "When the alarm goes off and the voice tells you that you went to bed far too late to get up this early, or that five more minutes won't hurt, DON'T LISTEN!" writes Ciara Conlon for Lifehack. "When you are in charge of the inner voice, there will be no stopping you."2. They exercise. Working out gets your circulation going and helps you stay alert, putting you at an advantage for a productive week ahead. "You'll get your endorphin rush, which will help your mood, too," Taylor says.3. They eat a healthy breakfast. On Monday morning, you want to handle everything you have control over. Eating breakfast is one of those things. "You don't want to be staring at the clock, awaiting lunch time as your stomach growls at morning meetings," she says.