Zero, zilch, zip, nada, none.
That's the percentage of responsibility your mentors (or anyone else on the planet) has for your personal development. After all, it's called PERSONAL development for a reason.
You are the best chance you’ve got. And that’s awesome. Why? Because you are the only person on this planet that you can control.
When you leave your happiness, your career, your emotional stability, your outcomes and your okayness (probably not a word :) to your circumstances and the people around you, the best you could ever hope for is a life of victimhood.
You have been called to so much more. There has never been (and never will be) another you.