The bottom line, if you travel a lot, is to essentially leave your bags packed for a typical trip. I might need to top some medications off, pack the right amount of socks and underwear, decide on the clothes for a particular trip given weather/activities, electronics, etc. It sounds like a lot of stuff but I can basically grab what I need for a typical 3-7 day trip in less than 30 minutes.
The other thing is just bring less stuff. A lot of people are amazed by how little I carry and I don't consider myself extreme. Consider what you really need as opposed to want.
I started using a hanging basket in my bathroom I can just throw in, but it's not feasible to leave my bags backed if for no other reason than the clothes would wrinkle.
(Then again maybe I'm not travelling enough for your advice to apply...)
I agree on the bringing less stuff front. I've slowly pared down a lot of what I bring, and just stop in a drugstore to pick up if I forgot some minor thing.
The other thing is just bring less stuff. A lot of people are amazed by how little I carry and I don't consider myself extreme. Consider what you really need as opposed to want.