Get up, get going, and start early. Getting to work ahead of time rather than behind feels like a punishment, but it’s giving you time to be organized. It also gives you time to grab a bite to eat. Eating breakfast, regardless of whatever fad diet you may be on, is important. It improves concentration (something we may not acquire early in the morning, especially on a Monday) and vitality. A supple dose of caffeine will always help too. Drinking something that is warmer or colder than room temperature will snap you out of a haze.
After that, start your day with a plan. Divide your schedule into one or two hour chunks. Focus on one goal for each unit and then just get to work. Doing the work isn’t what makes us tired; it’s the thought of actually starting it. The longer we force it off, the more we dread it. While beginning said work listen to music. An upbeat tempo cannot only liven up your mood but also get you to move your body around, which will prevent you from falling asleep.
Adding short breaks into your workflow is also a necessity. Though getting to work is important, you can easily become overwhelmed. Going, and going can drive you to want to quit faster than you should. Step away, take a walk, and get some fresh air.