Busy + Tension + Stress

Gosh...today is superb busy at work...overloaded with things and assignments to be completed..i could hardly breathe...after completing one job, then come another...felt like screaming...
During my days working as an auditor, it was pretty easy in the sense that everyone had been allocated with an amount of jobs to be completed and we just need to report to seniors and managers. But now, i have to deal with different people from different departments and it gets harder when they do not co-operate with you. Many a time, i told myself "it's alright, maybe give them some time to come back to me". however, people take things for granted. Often, i had to finish their jobs. (this is one of my weakness-soft heartened and i knew it)..Yesterday, as i had shared, there was an argument between operation & finance department. I knew it was not my fault but then i apologised to the Head of department...having said that, i 'scolded' myself for apologising something which had nothing got to do with me...
I guessed sometimes, we could not always be the "Mr Nice" or "Miss Nice" person...(unless you are appreciated/respected by others) because most of the time, we will be the 'victim'...and no one will pity us...Thus, from now onwards, i want to be tough and learn how to say "NO" when necessary...even others might criticise or speak behind your back...as long as i am standing on the right side, i have to protect and stressed on my believes/principle...
Lastly, two quotes of the day to share:-
"Never confuse motion with action." ~Benjamin Franklin
"Without changing our patterns of thought, we will not be able to solve the problems that we created with our current patterns of thought." ~Albert Einstein