The Buddha discovered the Middle way before He attained Nibbana. The middle way is also in the first sermon of the 'turning of the wheel'. Its an important aspect of following the path.
The point I am making is, to attain to Nibbana you have to live as the Zen says 'on the razor's edge'. You have to balance the Eightfold path.
This means that you don't have to live on the extremes of moral behaviour. So the trivial acts you should learn to ignore.
In modern times creating work-life balance, we do a lot of things which strictly speaking won't be moral but can be trivial. If you end up being pedantic to every action you will become paralysed. You don't have to be critical but you do have to be aware and mindful of every action.
So as long as your actions don't cause suffering to others and yourself it is fine.
Edit: There will be another set of answers pointing the obvious references to Karma, but one has to understand there is a difference between 'do-gooders' and the current generation of 'Stream-enterers'.