The great thing is that ND or not there are lots of resources to help you, because lots of other people share the same problems. Some bloggers / you-tubers you might want to look at are Dana K. White - A slob comes clean, Clutterbug, Minimal mom, there are lots of others too & a you-tube video or podcast can be great to have on to motivate you whilst you work on something in the home.
I don't know how old your children are, I really struggled with the mess when mine were primary and younger, it seemed like any effort I put in was counter-acted and they had so many toys.
I do think that it is hard for many people these days, because of the amount of possessions people have, my parents generation had so much less, modern homes are also smaller with fewer cupboards and many mothers also work outside the home, which was less common a generation ago. There is a theory that we all have a level of stuff that we can manage, and beyond that it will be chaos, this level is individual to you, this makes sense to me when I consider how I struggle and how others I know don't struggle.
Being in a messy environment is also said to be a cause of stress for many people, particularly women, so it maybe that your home is contributing to your emotional struggles.
Some people find setting an alarm and having a mad blitz of tidying once or twice a day, for 10 or 15 minutes helpful. It is amazing how much laundry you can put away in 10 minutes when you make that your focus. Having less clothes can also help with this, it is much easier to put the clothes away when the drawers are only 2/3rds or 3 quarters full. (I really struggle with parting with clothes, so this is very much a work in progress for me, but vacuum packing away out of season stuff helps).
For me on the scheduling, stuff is on the wall calendar so everyone knows what is happening, but I have to use my phone calendar and set reminders - I have weekly reminders that its bin night and to top up my children's school meal accounts. Things like medical appointments have to be in my phone calendar too, with a first thing in the morning reminder and a reminder ahead of when I need to leave, not just the actual appointment time.
I hope some of this is helpful to you and that you are able to be kind to yourself and accept that whilst this stuff is easy for some people, it is not easy for everyone and you are not alone in struggling with this stuff.