How do you separate personal from business expenses as a self-employed person?

And how stingy can you get? I’m a Pilates trainer, but I also need to have training sessions at least twice a month to keep myself aware of what I’m teaching others. Could this be counted as a business expense? Or if, for instance, I only wear makeup when I go to business meetings (which is true), and not for everyday things like going to the grocery store, can I write it off as a business expense?

By: Meh

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