What are some tips for dealing with IRS from an insiders' prospective?

What are some tips for dealing with IRS from an insiders' prospective?

The civil service, especially the Internal Revenue Service, has a very tough job to do. Nobody likes to pay taxes. What I noticed from my experience, when I was in my early twenties in a large group doing major cases, is that being a civil servant and conscientious, I found some CPA's and lawyers treated me in a disrespectful manner. They sort of looked down on me and gave me a hard time, so I did the same to them. Those people that were cooperative, that were pleasant to me, I gave an easier ride.