Writer's block - Characters and conversations

Writer's block used to be a really big obstacle for me, but now I've overcome it, and the solutions are actually very simple. So I thought I would share and hopefully help out some fellow writers. There are a few points to address so I'm going to separate these points and give them their own posts.

My writer's block would crop up at very particular points;
-When I'm describing a setting.
-When I'm describing a character.
-When my characters are having a conversation.
-When the plot needs to move forward/the character needs to act.
-When a sentence/paragraph doesn't sound right.

This post is about characters having conversations.
In order for this method to work, it's easier if you're characters are developed properly. If not, and that's the reason you're struggling with writer's block, don't worry I'll address that problem in a different post.

To write good flowing dialogue, I will usually go for a walk, or somewhere no one can hear me, think of the scene I'm stuck with, and then play it all out loud, as if I'm acting in a movie. I will have the situation or conflict in mind, but not the dialogue, so I have to improvise it all. But I treat it exactly the same as having a normal conversation. It's easier to figure out the most natural responses etc when it's said out loud with the thoughts and emotions to go with it. And the best thing is you're alone, so if you say something stupid or not right, no one's going to know.

I'll play all the characters involved in the scene. And while some people may think that's hard, I quite like to do it, because it makes me understand my characters all the more. This has always helped me figure out what people would say to each other if they were dropped into a surreal situation. I come up with genuinely natural conversations when I do this. But the key is to put emotion into it, you can't just talk like you're reading from a script. If it's an angry scene, act a little angry, raise your voice when you talk, make facial expressions to go with it. Sure if someone catches you, you look a little mad, but aren't we branded as mad anyway for being writers?