One step to be a good mentor is Be a positive role model.
Good mentors are respected by their mentees. A mentee can learn a lot from their mentor simply by watching how their mentor behaves in any particular situation. Good mentors will also look out for experiences, or even create situations in which their mentees can become involved to learn new things, for example, providing a look behind the scenes or a glimpse at how other people live or do things.
Another step to be a good mentor is Ask open questions.
Asking your mentee open questions will help you as a mentor to identify their real needs, values and passions. It's also a great way to get your mentee to think through situations themselves and draw out the consequences of the various choices or courses of action they can take. During these conversations, you can share your wisdom, without making decisions for your mentee. That's their job.