Staying relaxed through the day

Many people ask "How can I stay relaxed during the day when it is not appropriate to leave the desk/the job and take a long break to engage in relaxation techniques?" Here are some suggestions:
At work:

Use background music that has a slow beat and a calming effect.
Tackle the most unpalatable jobs first
Keep your workspace tidy and be organized
Keep a diary and plan the day
Be punctual
Set goals for the day, the week, the month etc..
Stretch at your desk and close your eyes while doing so. This relaxes the body and gives you an eye break if you are a computer user or have to concentrate on print for long periods of time.
Ensure you have a comfortable chair if you sit for a lot of your day
Have plants in the workspace to rest your eyes on during the day
Become aware of your posture and unwind - uncross legs, unfold arms, drop shoulders, stretch chest
Tune into how you are feeling and acknowledge the feelings and why they are there
Use auto-suggestion to counteract panic, anxiety, and ebbing confidence
Walk tall, with good posture and breathe deeply
Do not rush about but move with purpose

During your break or during lunchtime:

Spend a few minutes of your break in the fresh air. Go for a brisk walk for even five minutes.
Find a quiet place and sit quietly for just a few minutes.
Listen to sounds, count your breaths, be alone
Take a power nap at your desk by performing a body scan and stretching out those areas of your body that have tensed during the morning
Cut out unnecessary talking and movement for a specific period of time
Treat yourself to something within your means

General:

Do not take too much on for a day. The work and the home duties may be enough. Do not try to fit the shopping in too!
Time manage
Prioritise and review priorities regularly - do they still apply or do they need to be reset
Change practical arrangements like childminding, housekeeping, route to work to avoid traffic jams, work hours to avoid rush-hour etc..
Change behaviour: smile more, sit somewhere new during class, or the tea break, praise people's work when it is praiseworthy
Learn to say 'No' if you already have enough on your plate
Be flexible - see options and alternatives and give them a try
Reward yourself when you have achieved the end of a project, semester, course successfully