When you are not asking questions, challenging yourself and others, this is cause for concern; for one, you have stopped adding value.
Pay close attention to how focused you are in your work.
A good mentor will make the commitment to invest in the relationship with you for the long-term.
The mentor you can trust has your best interests at heart and wants you to be successful.
Mentors want others to succeed and will empower people to take action and to be themselves.