I've recently gone threw some hard times and I'm glad I had some real friends that stuck with me. I unfortunately found out some people weren't willing to stick with me.
Make sure you reassure your real friends from time to time that you appreciate them for sticking with you in your life; good times and bad. It doesn't have to be anything fancy or deep just say something like "Thanks for sticking with me even in my hardest times." or better yet schedule more time to spend with them. However you do it just remember to remind them and give thanks for their friendship.