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Make sure to keep your desk or work area organized and tidy so that you know where everything is and don't waste time looking for lost items. You can have a filing system, or trays on your desk, that help you organize your tasks in terms of what has to be done today, next week, or by the end of the month. Taking just 10 minutes a day to keep your workspace organized can make a big impact on how happy you are at work. You want to feel comforted, not stressed out, when you enter your workspace. Personalize your cubicle, work space or office. Adding plants, pictures of friends and family, and other personal items leads to increased job satisfaction, if permitted. This will also make your work space feel more like home. Answer correspondence which simply requires an immediate reply (without any research), fax simple returns immediately. Then categorise the rest of your post into "urgent: respond by the end of the week" and so on. Remember that every job completed and not deferred brings a sense of accomplishment which leads to a sense of happiness at work. Instead of dreading completing a task like making a quick phone call or sending an email, just get right to it when you have the time. You'll feel better about it because you'll be able to move on about your day without it nagging at you. This refers to tasks big or small from a fax to a report. Professionally presented documents will bring praise and recognition from colleagues and even management; so will a delicious meal made perfectly or an incisive lecture on Shakespeare. Whatever work you do, take pride in the work you've put in as well as in how it impacts people. Everybody loves praise and the happiness and sense of pride in a job well done that it brings. Even if you feel like a lot of your work is monotonous, you should find something to take pride in, whether it's a small aspect of the job (like a report you completed this month) or a finished product (a house you've built). Help them as much as you can. You may find that they will express gratitude in various forms. We all love to feel useful and we all feel happy when people thank us for simply "doing our job" or going the extra mile. Whether you work in an office or in a restaurant, it never helps you to be rude or condescending to other people. You may feel frustrated or impatient, but having a negative interaction with people will only make you feel worse. If you want to feel happier in the workplace, then you should work to foster a positive relationship with the people you work with. Of course, if someone is really treating you poorly, then you may not be able to put a big smile on your face. If you work on being patient and staying in control of your emotions, you'll be improving your attitude at work for sure. Though you may feel like you're strapped to your desk all day, or stuck in one position, there are a number of things you can do to improve the amount of physical activity you can do during your work day; being more physically active will make you feel more energized and happier. This can start with your commute: you can try to walk or bike to work, or just to find a way of getting there that requires some physical exercise, even if it means walking a little longer to catch a bus. Once you're in the workplace, here are some things you can do to get more exercise at work:   Take the stairs instead of the elevator Walk to a co-worker's office instead of sending an email to ask a question Leave the office to walk across the street to get coffee Go outside to eat your lunch Get a standing desk to burn more calories while you work If you want to be happier in your workplace, then you have to take breaks from your work from time to time. You don't want to feel repressed or like you can't leave your desk or go outside until you're done with your work day. Studies show that it's important to take a break at least every 90 minutes; step away from your computer or whatever task your doing and take 10 minutes to rest your eyes, stretch, take a short walk, make a brief phone call, or even read a little bit. If you have the luxury of taking a break from your work, then you should make a habit of it if you want to feel happier. If you work inside an office building, you should make sure you leave the building at least once or twice a day, if you're allowed. If you start feeling cooped up in all that stale air conditioning and fluorescent lighting, it can have a serious negative effect on your mood. Stepping outside to get some sunlight and fresh air from time to time will make you happier as you go about your day. Though you may think that multitasking can help you get your work done faster, it has been shown to actually slow you down, not allowing you to fully immerse yourself in one task. You should check your email, respond to any emails you need to read, and then move on to project A, and then move on to report B, etc, if you want to systematically check items off your work to-do list. If you end up doing five tasks halfway, then you'll feel less of a sense of accomplishment than if you fully completed one or two tasks.  It can help to write a to-do list at the beginning of your work day and to go about checking items off of it. You'll feel more accomplished, and therefore, happier in the process. Do not waste time reading junk mail. Sift through your e-mails and delete all jokes and sappy messages from friends. Ask your friends to only send e-mails to your home. Wasting valuable working hours at work will lead to increased stress and rob you of happiness. It'll also keep you from being focused on the task at hand.

Summary:
Have a welcoming workspace. Complete simple tasks as quickly as possible. Take pride in your work. Treat your clients or customers with respect. Be as physically active as you can at work. Take breaks. Avoid multitasking.