Feeling useless

A friend and ex partner has been diagnosed with a very aggressive stomach cancer....I wish I could at least try and be some kind of help but i feel useless ...I feel numb...I wish I could have words of wisdom but I don't have anything of any use to say...I'm not a child or a young adult...I've been in times when I felt the same ...but it's making me question so many things ...about me about my health ...I just want it to all go away