At the end of the day, all you have is you. You may be married or in a committed relationship, but let’s be honest: that can change. You may have a great group of friends, but that can change. People change, you change, and sometimes that means growing apart. Relationships change. There are no guarantees in life.
People move in and out of your life because of geography, circumstance, or moving in different directions in the scheme of things. Therefore you have to be strong. Because there is only one person you will certainly be cuddling up to and sleeping with and comforted by for the rest of your life, and that person is you.
You need to be really strong and your own best friend, lover, and fan. You need to be the champion of you. You are whom you have always. You are all you are guaranteed to ever have in this unpredictable life. Always love yourself first. You must love your own company above all else if you want to survive in this lonely world. People come and go, but you are (your) forever.