When you are too focused on yourself, you are less interesting. People do not want to hear about you, instead, they want to be heard.
If you take the approach of listening twice as much as you speak, you will be a better communicator. If you become curious and make the conversation about them, you will have more influence!
When people see that you are taking a genuine interest in them, they feel valued and respected. This makes them open up. This gives you a deeper understanding of what they are going through. You are then able to communicate about things they relate to because it is about them.
This approach will make you a better communicator, salesman, influencer!