One mistake which generally the careless make, is that they consider some good deeds to be lowly and do not save themselves from some deeds they know to be bad.
Some deeds are good but Shaytan misleads with [saying], ‘The work that are major which need to be done, you do not do! So what is the worth of doing this [good].’ Similarly, sometime in regards to bad deeds he says, ‘You do not let go of the major bad deeds. Having that, what is you piety worth?’