When a person is focused and is working in something his mind is clear and out of thoughts but sometimes our brain may think and the thoughts might come one after the other. Such thoughts may distract us from our deeds and that can be truly annoying but of course we own our brain/mind so it is not a big challenge for most people, personally as an overthinker I may have a trigger time to time dealing with my own thoughts they can be really endless... so what about you do you have those random thoughts when working?