I totally understand how you feel, where you are coming from and how things seem to be going.
I've been going through the hair loss too. It is compelling and very, VERY difficult. I totally understand it being one of the few things you liked and now losing it.
Try to get your hands on the book "The writings of Florence Scovel Shinn"
Here's a sample of the stuff in this book:
While it has a religious foundation it is not necessary to practice that element of it. The book is very good for lifting spirits and building strength and purpose to move ahead in life.
I cannot tell you how much this woman's writings have helped me. All I know is that I found purpose and turned my life around to have much success including having my children.
Pls. hang in there. What you need in times like this is direction and purpose. It's tough to feel these when it feels like everything is crumbling all around you. I also understand where your friend is coming from. He means well, he's just not very skilled in telling you what you need to hear but he really does mean well.
Things will look up. Really, they well. This is how life goes. In waves of difficulty but also in happiness. I've learnt that happiness as we expect it, may not exist. But if we can string together lots of little happy moments, we CAN eventually find that "happiness" that we're looking for.
I wish you find those waves of happiness very, very soon.