Can I start a nature therapy business without any certifications?

I want to take people hiking while they tell me about whatever's going on with them. If they want an opinion from me on the matter then I'll work with them, otherwise they'd basically just be paying me to vent while being taken on a hike they have never been on before. Can I just start charging $60 -... show more I want to take people hiking while they tell me about whatever's going on with them. If they want an opinion from me on the matter then I'll work with them, otherwise they'd basically just be paying me to vent while being taken on a hike they have never been on before.

Can I just start charging $60 - $80 an hour for this without having to worry about anything? I live in CA
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