This is doubly/triply/quadrupley difficult for those of us with ADHD; I've spent years working on meditation, and I only get glimpses of silence; and that's only on the best of days. To take a medical condition such as ADHD and say, "hooboy, everyone gets distracted" is to entirely dismiss what those of us with it are dealing with. It's not just sometimes I get distracted; it's nearly all the time I get distracted if I am not bringing my 'A' game to even the simplest of tasks - without exacting intentionality there's no chance I'll have the left-over neurons to even think about being in the present.
So, it doesn't just take intentionality, as most people can clip off daydreaming or rabbithole trains of thought with minimal friction, but for many of us with ADHD the act of attempting to break the "distraction cycle" can essentially have the opposite effect, or just left turn us into another avenue of distraction. I know for myself, there's an anxiety that builds when actively (we can't passively quiet our brains) attempting to quiet my brain; as the doubt builds as you find it more and more difficult to step away from your racing brain and into the now. This becomes a self defeating cycle which is difficult to steer out of when attempting something like meditation.