[quote Sleepplease1111]@Cowbells tell me the secrets of organising a stress free life?
I’ve always got 101 things to do and feel like I’m failing in all parts of my life, I seam to frustrate and annoy people easily 3 of my family members have been annoyed with me in the last 2 hours.[/quote]
I work for myself - that's the main one. It's not possible for everyone but for people who are burnt out, I do think if you can find a way to work for yourself (not stupid MLM but real work) it helps a lot. I organise my own working hours, set to my own rhythm. I up my hours if I am feeling good and reduce them if I get too stressed. I take a lot of time off. More than I should but it keeps me relaxed. I also have plenty of time to exercise as that helps. I hunted around for a very good, cheap exercise class and do it most days.
DC are grown now (which weirdly carries its own massive stresses) but when they were little I meal planned and rotated about 20 different easy recipes so I never had to think much about food. When they all got bored of them, I let DH take over some of the cooking. 
I'm quite relaxed about housework, but have short daily routines that keep on top of it - 15 mins three times a day - kitchen and bathroom plus one other room and laundry. What doesn't get done in 15 mins doesn't get done. Unless we have guests or it's Christmas.
I let all stressful friendships die a natural death. I stopped charging around doing 101 things for local charities and now do nothing for charity. I used to work myself to the bone unpaid and unappreciated. I reduced the amount of time spent with difficult relatives and started seeing them only on my own terms. If they start to bully me I just wander out of the room and go for a walk and come back 30 mins later.
I never row - not with DH, not with DC. I pick my battles incredibly carefully. About one row every 5 years. Even in lockdown - no raised voices.
I plan things very very carefully. No winging things. I used to wing it and get so stressed. Now if we go on holiday or I have a work presentation it's all thoroughly organised.
I do a lot of things to stay upbeat - watch comedies, listen to a lot of good music, feed the local wildlife and watch them etc.
So I did consciously decide: enough stress! and make changes. Only a couple of things stress me these days - one I can do nothing about (DS's SEN) and the other is my sole responsibility. So that's manageable.