You are the new avatar, but your connection to your past lives is strong. For the better or for the worst they are helping you

They argue in your mind

Yangchen: "So Korra is here too now....."

Kyoshi: "She never froze someones lungs, dissapointing"

Korra: "Oh shut up, go bully Roku"

Roku: "Dont bring up the volcano please..."

Aang: I'm stuck here now, well ill do my best to guide the new avatar"

Korra: "Shut up"