Summarize this article:

If you want to focus better, you need to make a to-do list every day so that you have a tangible list of things to check off when you're done, and feel more direction to accomplish your goals. Instead of sitting around aimlessly, you'll have a list of goals in front of you, and will feel a sense of pride when you get them done.  Write down at least three things you need to get done that day, three things you need to get done the next day, and three things that need to get done that week. Tackle the things that you need to get done that day first, and feel accomplished if you have time to get a jump start and work on the other tasks. Reward yourself with breaks. Give yourself a small break every time you check another item off of your to-do list. Try doing all the small tasks, such as getting groceries, as soon as you can. This will narrow down your list and will ensure that you do all the minor tasks first. Don't be lazy and procrastinate those small things! Remember to do the most creative or difficult tasks in the morning, when you're full of energy and motivation. Save the easier things, like scheduling meetings, filing old papers, or cleaning your work space, for the afternoon, when you're feeling more drained. Don't put off the hardest task until the end of the day, or you may find that it will spill into the next day. Keeping an organized space is the key to being able to focus. Focusing is much easier if you know exactly where everything in your office, library desk, backpack, or general workspace is. Having an organized space will save you countless time when you need to find something, and it will keep you more motivated to get work done.  Clear anything not work-related away from your workspace. Aside from a few photos in your work office, everything you keep out should be related to work, whether it's paper, a stapler, or a set of pens. Put away your cell phone unless you really need it to work. You can check it every hour or two, but don't keep it out on your desk, or you'll be tempted to look at it all the time. Have an organized filing system. Knowing exactly where all of your documents are will save you tons of time throughout the day. Managing your time is an important part of being focused. When you start a new work day and write your to-do list, write how long you think it will take to accomplish each task next to the task, so that you have a sense of what your day will look like. Try to do the most time-consuming things first so you can get them out of the way.  Set reasonable expectations for each task. You shouldn't give yourself twenty minutes to do something that should take an hour. Otherwise, you'll get disappointed when you don't accomplish your goals. If you finish a task early, use that time for a quick break. This will motivate you to get more work done. Taking breaks is just as important as staying on task. If you plan your day to include bursts of productivity followed by short breaks, then you'll be far more focused than if you just spend the entire day "sort of" working without taking any real breaks.  Give yourself at least 10 to 20 minutes to take a break after every hour of work. You can use this time to make a quick phone call, respond to a friend's email, or step out to get a cup of tea. Reward yourself with breaks. Use the breaks as a motivation to get work done. If you think, "I can have a delicious smoothie once I'm done with this paper," then you'll be much more motivated than if there's nothing positive on the horizon. Use one of the breaks to get some mild exercise. Just taking a quick 15-minute walk or walking up five flights of stairs and then back down will get your blood going and will make you feel more alert and energized. Take a break to get some fresh air. Don't spend all day cooped up in your office or home. Step out to breathe in some fresh air, catch a morning breeze, or let the sunlight hit your face and you'll feel more focused and ready to get back to work.

Summary:
Make a to-do list. Prioritize your tasks. Keep an organized space. Manage your time. Plug breaks into your schedule.