How to manage passive income streams - help, i'm organizationally challenged!

Okay, so I'm super excited about the passive income idea - set off all these little things in motion and watch it go - make's my hearbeat go up a notch just thinking about it.

I've dabbled a little with a few things, but the problem I'm having is dropping plates.  Like: "you haven't updated your blog in ages over here",  "over there forgot to do your 'daily' facebook marking for the past six weeks straight", "you haven't introduced a new product for awhile over here", and "you're getting behind on inventory over there", and then a whammy like, "oops, haven't watered the microgreens for a week... they dead"
... and then I fall to my knees, screaming into the sky in frustration ...

This is my confession:  I'm great at starting things.  (Probably things that would actually work, too.)  The problem is the dream quickly falls apart when it comes to actually maintaining them.
It is a pattern that has happened to me time and time again, and I know if I hope to make any traction at all in the future, I need to learn how to break free from it.

Is there any help for the organizationally-challenged?

How do you do it?  How do you keep up with all of the million-and-one little tasks that need to happen without letting things fall through the cracks?
I'd like the names of specific tools and techniques you use if possible.

A couple years ago, I started using a daily checklist app/program to keep track of everything I need to do. Then I make it my priority each day to go through my checklist before I do anything else.

There are hundreds of different checklist apps out there, so feel free to try some and see what works best for you, but the one I like the most is this Android app.

Regardless of which you go with though, I suggest picking one with flexible scheduling - that way you can set up a task that you do every other day, or only on Tuesdays, or only on the third Friday of each month, and so forth.

It's a life-saver in more ways than one!

Delegate or outsource anything you can. Personally I have found doing marketing & development at the same time burns me out and it is best to just focus on one or the other and have someone else take on the more time consuming things so I can focus on scaling the product/business.