Ask if you can listen. Text them each morning to say good morning. Don't give too much advice unless they specifically ask for it. I've seen that my best friend in the world oftentimes just listens to me when I'm hurting and says phrases like "It's hard" and "I understand" as I talk and for some reason, that makes me feel infinite times better than someone who chimes in with advice.
For some reason, I always love Canada. Well, by looking deep down, I know why I love Canada: nice and friendly people; beautiful country with a lot of snow and good healthcare system (unlike in the USA where healthcare is more like a jungle.)