If we treated every event like it was a brand new experience, we would quickly become overwhelmed under the weight of it all. So we pattern match. And we filter. And we do the same things over and over again without thinking about them.
Think about the last time you tried to get into an exercise routine. Or consistently wake up earlier. Or quit smoking. None of those things are complicated, but all of them are hard to accomplish. We don’t fail at them because they’re complicated, we fail at them because we don’t prioritize them and think about them (let alone do them) on a daily basis.