@bogomep great advice, Bogomil ! My podcast could be considered as a "relatable advice podcast". It touches on topics like minimalism, sustainable living, neuroscience and neuromarketing, veganism, social media marketing, acting, slow living and much more.
The idea is to sit down with rotating guests to tell (their) stories to help other people navigate life mindfully.
A link just in case :) https://moreteekay.com/podcast/
Guest podcasting, for sure, you get direct access to people that are already podcasts listeners and likely your target market (If you get on the right podcasts. But also break that content up and repurpose it into bite sized pieces and use it on social media. It will give people little tastes of your podcasts and get them interested in hearing more.