Building up walls to keep people out of your life will do you no good. Instead, let God guard your heart. He will let who he thinks is right for you in and out of your life. Some are meant to make a lasting impact and then move on, and others are meant to stay a while and walk with you on this journey called life. Whatever the case, every individual will affect you in a different way and you will learn something from them. Even if the influence is not positive you will still learn something from the situation you are in. Don’t let these moments pass you by without realizing what God wants you to learn.