Even if the mentorship exists largely over email or online, don't start bombarding your mentor with questions for advice at the last minute if it doesn't fit into the pre-outlined relationship you'd established. If the relationship reaches a natural conclusion, it's ok to end it. If you feel confident that you've improved enough in whatever skill you were hoping to learn from your mentor that you feel confident to go forth without weekly coffee meetings, say so. Think about what you might be able to offer your mentor in return. If you're getting loads of free advice about your short stories from a professor, ask if there's any research or tech help they might be able to use around the office. Setting up the new wireless router would be a great way to earn favor. As you improve in your career, remember who and what got you there. As opportunities arise, don't forget about your mentors that helped you along the way. Write to your mentor to keep them updated on your progress and remember to thank them for their specific contributions. This will give the mentor a feeling of being useful, needed, and also skillful at their craft.  Be specific. Just saying, "Thanks, you're being so helpful!" isn't as reassuring as, "I nailed that last sale thanks to your opening line tips. Thanks!" Gratitude could include a small gift as a "thank you" token. Small things like a book, a bottle of wine, or the occasional meal may be appropriate. Emotional involvement with your mentor will usually not be in the best interest of the mentoring process, especially if it's someone you work with. Casual interaction is acceptable and might even benefit your professional relationship, but your mentor is not meant to be your new best friend, so avoid digging into personal topics that are notably deep or vulnerable. For example, in addition to learning about their professional background, you might take time to ask them about their interests at the end of your meeting. Connecting on a common interest may even be one way to establish a greater...

TL;DR in Vietnamese:
Lập một kế hoạch và tuân thủ. Xây dựng mối quan hệ thành có lợi cho cả hai bên. Thể hiện sự trân trọng của bạn. Hãy nghiêm túc giữ gìn mối quan hệ chuyên nghiệp giữa bạn và người cố vấn.