Cassandra's advice is great. The only thing I would add is that you should consider focusing on the quality of the relationship, more than just who the relationship is with. The most valuable personal/professional relationships I've formed in my life have a solid foundation of trust. When individuals have deep trust with each other, a more honest relationship forms. With honesty, things like feedback and personal/professional guidance can be shared knowing it's coming with good intentions and an understanding of who you are, what goals you have, etc. I hope that helps!