Writer's Fallout Shelter

My question tonight is what does everyone do to organize themselves when working on several projects at once? I'm at different stages of three firm projects and then I have other little ones I want to do to. How do you organize your space and time and general paperwork and stuff.

I'm trying but I'm not very good at it. I bought a planner to use for work and personal so that I can schedule things for myself. And at the same time since my darling cat decided to take a bite out of my laptop cord I had to find my desk and my desktop computer. I think last night was the first time in at least a year that I had sat at my desk. Needless to say any thoughts or ideas would be greatly appreciated.