Awareness
Being able to recognise the signs of an ineffective relationship is just as important as knowing how to find a mentor in the first place! Be prepared to end the relationship graciously and recommence your search for a more suitable mentor when these signs show.
Finding a mentor and learning how to make the most of their time and experience will help keep you on track to achieving your goals, no matter what stage you are at in your career. Mentors can learn a lot from these relationships too, as they get a chance to reflect on their own work styles and strategies. It is not surprising that mentees who seize every opportunity often make great mentors.