Why do you believe in it, do you approve it in theory or also in practice? I think a lot of people approve of anarchism in theory but rejects the possibility of it to be put in practice unless we live in an utopia.. which I don't think we do, unfortunately. Maybe techno-anarchism would be more practical? Technology is such badly regulated and ordinary people are punished harsher than corporate so I really think techno-anarchism deserves a lot more attention (not saying anarchism itself doesn't) I see a lot of people here are more knowledgeable than me so don't take my word so seriously, maybe I shouldn't be expressing my idiot thoughts on it, or maybe just embrace it and ask regardless of any shame I might get.
I'm not trying to be mean to anyone, just genuinely wanted to discuss with whoever is willing to chip in on the topic.
If by viable you mean able to be implemented without enormous problems, I would argue that capitalism isn't viable. I believe anarchism would be better for more people than the status quo, so I'd say it's viable in comparison
Edit: to answer the other part of your question, I practice anarchism in my daily life. Anarchism, to me, is a value more so than a political ideology. I don't believe in hierarchy, so I don't perpetuate hierarchy, and I actively work to dismantle it around me
Damn yo, i think i might be an anarchist
Baby, I'm an Anarchist!