Disciplining One Year Old?

Arizona • Married💍 | 21 | Mom of two under two and one on the way

How do you discipline a one year old? My LO is starting to not listen to anything I say... She's devopling her little personality but sometimes I'm telling her no to protect her (like when she trys to eat a wire that is plugged into the wall) but she does not listen until I get up but even then she just smiles and laughs like it's a game. I don't want her to develop a habit of not listening. What can I do?