http://revach.net/article.php?id=4076

Section: Revach   Category: Lists
4 Reasons To Worry About Those Little Tiny Aveiros
When doing tshuva we tend to think of the big things we've done wrong and worry less about the little aveiros.  Rabbeinu Yonah in SHaarei Tshuva says this is a very big mistake.  The little ones can be your biggest problem, and he gives four reasons why you need to take care of the little ones no less than the big severe aveiros.  To see the list click here for Revach Lists.