How to identify those mentors that are worth spending time with? Given that most mentors, angels or VCs are guided by a similar principle when meeting new entrepreneurs/startups, why shouldn’t you have the same approach? At the end of the day, YOUR time is the most valuable resource you own. Invest it carefully!
I have put together a list, based on my personal experience, that will help you identify toxic/unhelpful mentors. I’ve posted it on Medium: https://medium.com/@cborodescu/when-spending-time-with-mentors-becomes-a-waste-of-time-429d7e3746f7