How Do You Be Honest and Assertive and Not Manipulative?

Growing up I had to lie about everything it was expected and I just said what I thought the adults wanted to hear at the time. I have been working on honesty. I am not so good at assertiveness but I am working on that as well. I am trying to be as honest as I can, but it is hard as I run this interference thing with other people.

I just am not really sure how to be honest and assertive. How do you know what is the right thing to say?…

How Do You Be Honest And Assertive And Not Manipulative?