Oh no, I agree with that statement...happiness only you can create it from inside and even in the coldest cell or the hardest moment of your life, it will sustain you. Now, friends can be so much, but they may not be able to give you what you need to find and feed within yourself, only compensate or delay a pain you will feel.
I remember having friends I couldn't part from because as soon as we were separated my sadness, my bad mind will attack me with all those things that were wrong in my life or the consequences of my bad choices and hazard. Once, I found happiness I work on feeding it and sharing it with my friends and anybody I can come across.
Yes, happiness is that much, happiness is you happy, fulfilled, you being light and Light.
Love and peace to all and remember to water that plant called happiness and breed it, even if you have to search for it in the most remote corners of your being.