How can you express a clear and coherent argument visually or in writing?

In my opinion if i have something that i really want people to listen to i write it down, for example i always argue with my Father and i while ago he really got on my nerves and wouldn't listen to me, so that night i wrote down what i wanted to say to him and left it on the kitchen table so he would see it in the morning, he did and he took into account what i said.