Most likely you will, at some point, be talking - with your attorney and upon his/her advice.
For people who act lawfully, telling the truth can help - but only if you have a skilled representative making sure that you are given a chance to describe what actually happened, without being manipulated into saying something that can be used out of context to either paint you in a negative light or be used out of context to impeach your statement. Just having a skilled attorney to say "don't answer that" at the right time can be of profound benefit, and will prevent the interrogator from pressuring you for not answering a particular question.
That being said, it is important to have a basic understanding of the law, and the statutes and precedents that govern cases similar to yours. For example, saying "that dog bared its teeth at me and I feared he was about to bite me" can result in no charges or an acquital whereas "that dog was going to bite my dog so I shot him" would result in an animal cruelty conviction. (This is a real example, and actually happened - unfortunately, the defendant made the later statement).
One reason (among many) that police are almost always found to have acted properly is they understand the law, and how to write a report that frames their actions in a manner that depicts lawful behavior.
In other words, having an attorney is no substitute for knowing how to handle a use of force interrogation.
I would recommend "Criminal Interrogation and Confessions" by Inbau, Reed, et. al. as a starting point. If anything, the book will teach you that the reassuring hand on the shoulder and comments like "I can see how you would have done that" are not an indication the interview, ooops, interrogation, is going well for you.