Passive

After writing reports, or even emails, we should also make time to edit the writing.  After writing the ‘bad first draft’, go over it again to simplify the writing, avoid repetition or extraneous words, and, mostly, to reduce the usage of the passive voice.

The passive voice is not wrong; the active voice is just stronger and communicates in a less wishy-washy manner.  

“I wrote these 100 words” reads better than “these 100 words were written by me”.  They both convey the same information, but the passive tense – the second example – is cluttered and longer than it needs to be.