What have you been thinking about recently?

A few months ago, I was voicing my opinion on every subject, every mistake that was being made by every person I work with.  A few weeks ago,I was pulled into the office of the managers, told I was alienating everyone I worked with and I promised the managers I would try to behave.  That was two weeks ago. I have done my part as far as not allowing my tongue to yell out certain profanities and other not so nice wordities. However, the mistakes continue.  I have a hard time dealing with inattention to detail since it is so easy to pay attention to in the first place. It only takes a second.  and yet it continues.  The other girls in the back office are still dealing with the ignorant, perfectly preventable mistakes that continue to occur. I suppose I lashed out enough that everyone is walking on eggshells around me, but at least I got my point across and they are not making the same mistakes with me, however, I see it goes on.  I am having an extrememly difficult time understanding why, when it is no longer occuring with me, it must continue? Simple things such as filing an enevelope under the correct letter of the alphabet is being ignored.  So I guess I can see why mgmt wants me quiet is because its easier to have me quiet than to make the other handful of people pay attention to detail.  I get that. It's lazy, but i get it.  But what am I missing? It's not hard for people to tell you what to do.Often times it is harder to do things on your own. It is not hard to file envelopes under the correct letter of the alphabet. Why is these same 2-4 people allowed to continue on their path of idiocracy and ignorance while the rest of us suffer from the ramifications? I understand I should play nice, but my standpoint is: We are only human and we make mistakes. It is imperative we learn from them so that they not be repeated.
~Cheers to the grey haired club!