Another day, another dollar and another darn headache!
How in the world are you going to make it through the rest of the day at this job? It's so stressful and frustrating and makes you want to give up your love of what you do.
It could be the... keep reading
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Practice some very simple and short yoga exercises that you can do in short breaks(Say taking 2 minutes breaks) between work. Also some of the yoga practices will improve and even refresh your body as well as your mind. Yoga is mainly about good posses and breathing habits, which can be followed between work without even taking any break at all.
View some relaxation techniques in the below mentioned pages