I have been feeling this way lately, work, school starting, home projects, weeds. There is a lot. The to do list is never ending. What do you do when you feel overwhelmed? This could be the to do list, dealing with another person, managing your own emotions. There are many ways to feel overwhelmed.
What are your symptoms? Do you start to forget things, become more irritable, sleep less, more headaches, body aches, feel sick, yell, throw things, cry? Anytime you notice your behavior changing due to external circumstances, it would be a good time to reign it in and examine it. What is going on?
Write it out. What is going on that is causing the feeling of being overwhelmed? Do you have too many things to do? Have you taken on too many responsibilities? Is money or time too tight? Are you taking on the responsibility for too many people? Perhaps you are allowing someone to take advantage of you, hurt you, use you or someone you love.
My first suggestion would be to take some time to list out your responsibilities and essentials. Often people feel overwhelmed when they are not managing their time well. Using a calendar, schedule and making appointments (even for exercise, meals, and cleaning). If you make time for your duties and things you want to do, it can be easier to figure out where to put it all.
The important and urgent items would need to be first. Those with specific dead lines (work, kids to school, bills, meals). Many things are important with no specific dead line (exercise, grocery shopping, cleaning, family time). Start with those important things. You need to focus on your self first. If you find that there are several items still on the list, not under important, what should you do with them? Get rid of them, move them to a later day/date when you have more time, delegate to someone else?
If you are feeling overwhelmed and frustrated you will not be effective. You might need to give yourself 5 minutes to do some deep breathing, take a short walk on your break at work, get more rest. Take care of yourself first so that you can think clearly and calmly about what needs to be accomplished. Some things might not be necessary, but feel important to you. What is really important?