No, not that sort of kiss, but KISS.
Keep It Short and Simple, or even, Keep It Simple Stupid.
Your preference probably says a lot about your character. I lean towards Stupid.
Complicated has its place, and is sometimes necessary. Mr Musk, NASA, ESA and others do not reliably sling tons of expensive metal into orbit with simple. Complicated can be made simple, just depends how many steps your prepared to break it down to.
But I want to keep this simple. I try to keep life as simple as possible, and would advocate the same to another.
Many aspects of life are within your control, to a greater or lesser degree. These are the simple things. By keeping these things simple, you can free up your mind to tackle more complex issues at work, or in your own creative projects.
Keep It Simple folks….