hahaha nice quote! I'll steal it ^^
For my organisation issue, I changed the concept a bit, and decided to consider my work as a stack of tasks.
When a new task arrive, I push it on top, and it becomes my current task. When the top task is done, I "pop" it out, and the one below becomes the main one.
At any given time, I can move a lower task to the top and work on it, but I force myself to only work on the top task.

Of course, that doesn't take multitasking into account. If smI get a request that can be cleared in less than a minute, I don't even stack it.

I wrote a first PoC named "stak" (I like that it's an anagram for task). I'll clean it a bit and post it if you're interested