Love

You know when you truly love a person, your heart is telling you that you want to keep the person you truly love close to you at all times. The way you love that person, it doesn't matter if he/she is different from you or not. If you find out that you don't love the person you're dating, it's just your heart telling you that you can always find another person who you're truly in love with. Use your heart and your mind, and have a sense of who you are. What makes you you is knowing what made you that way, so you can understand more. Then, when you die, you'll know you lived your life to your highest potential. It will take you a long time to get to the point where you know that, but it worth the wait until you know and always keep on knowing. If at anytime you stop knowing, then train your mind so that you never stop knowing again.
Knowing lets you push all of the assholes aside, because it doesn't do you any good to sink to their level.