I've mentored more than 100 students over the past decade. It's something incredibly important to my life and wellbeing.
I suggest going to your alma mater or graduate school and asking them if they have a mentorship program. They almost always do and it's an easy way to get started.
There's a lot of different opportunities for mentorship as you can see from the comments. Find a specific demographic that you're passionate about helping. Maybe it's someone less fortunate, maybe it's a carbon copy of you. After you have that set it will be significantly easier to identify opportunities and organizations through which you can mentor.
I suggest going to your alma mater or graduate school and asking them if they have a mentorship program. They almost always do and it's an easy way to get started.
There's a lot of different opportunities for mentorship as you can see from the comments. Find a specific demographic that you're passionate about helping. Maybe it's someone less fortunate, maybe it's a carbon copy of you. After you have that set it will be significantly easier to identify opportunities and organizations through which you can mentor.