I'm speaking more from experience myself, not so much as a professional...

I feel that as many people get older, they lose some of their previous abilities or skills, especially in the organization department. It is challenging to balance all of the demands of life successfully. It becomes even more challenging as we age, because our minds, I believe, simply aren't as quick as they once were.

So the first thing I'd counsel is acceptance. Acceptance that things that once came easily may no longer come as easily. You have to change with that acceptance, and find new ways to adopt. That means, perhaps, giving up doing as much as you've done in the past. And using other methods to make up for that loss of ability. For instance, I've never been much of a calendar/to-do list kind of person. Until I got older, and I found using an appointment calendar and lists like that more helpful to keep me better organized.

Of course, what works for me or someone else may or may not work for you. You need to find you own methods that are most helpful to you.

The hardest part is accepting that maybe, just maybe, you're not this superhuman person who do everything you did a decade ago. And that may take time...

Good luck!
DocJohn