I have a friend with anxiety and depression, let's call him "Bob". As someone who deals with anxiety as well, I found that mindfulness meditation has significantly helped me. It didn't solve all my problems by any means (yet), but I know it's improving my life and I've only been doing it for a few months. It's mainly helped to lower my anxiety and make me feel less depressed about it. Seeing thoughts as mere objects really does do wonders.
I want to recommend this practice of meditation to Bob, but I don't want him to think that I believe there's "something wrong with him". As someone who's dealt with anxiety I know what it feels like, and it's even more extreme with him. However, I do know that he probably wants help, since many of his online posts complain about being alone, having no friends, people betraying him, and so forth. Many/most of his online posts are also about how his anxiety and depression are really difficult to deal with. It should also be noted that I used to know Bob for a few years in person, but now our only communication is almost purely limited to online (and it is quite rare -- maybe I chat once every few months, at best).
Question: How do I recommend a treatment that's worked for me (and is scientifically accepted) to a friend with anxiety and depression without making him feel like I'm harshly judging his condition? At the same time, I would like to put forth a convincing argument for practicing meditation, so that a person with anxiety and depression would be motivated to try it.