Do not consider any Sin as Trivial

Hadhrat Aaisha radiyallahu anha reports that Rasulullah sallallahu alaihi wasallam said, “O ‘Aaisha! Stay far away from those sins which are considered trivial*, for indeed, Allah Ta’ala will take (people) to task for it (sins that are considered trivial).”

*For example mocking someone, using someone’s property without their permission etc.