I was just wondering about this word to suggest it to my friend to use it for the NGO he is going to start soon.
So, there are plenty of words available to accomplish this aim, however you should use them in the proper situation. I mention some of them here (please note that some of these words have other meanings too, but I just focus on the related meaning here):
Coach: Someone who trains a person or team in a sport.
Lecturer: Someone who gives lectures, especially in a university.
Instructor: Someone who teaches .
Trainer: Someone who teaches people particular skills, especially the skills they need to do a job.
Governess: A woman who lived with a family and taught their children in past times.
Educator: (formal) Someone whose job involves teaching people, or someone who is an expert on education.
Mentor: An experienced person who advises and helps a less experienced person.
Professor: A teacher in a college or university. In Britain, a professor is a high-ranking university teacher, especially one who is head of a department.
Leader: The person who directs or controls a group, organization, country, etc.
Guide: Someone whose job is to take tourists to a place and show them around.
Guru: Someone who knows a lot about a particular subject, and gives advise to other people.
Counsellor/counselor: Someone whose job is to help and support people with problems.
Consultant: Someone whose job is to advice on a particular subject.
All the meaning and examples borrowed from the Longman dictionary.
Enabler, one who enables. Not commonly used in British English.
I live in Granada, Nicaragua. When we got our residency, we got help from a professional local who knows the ropes. He is referred to as an 'expeditor'.
muse: Typically a female person or female ethereal presence that inspires creativity and a desire to create and achieve.
Derived from the term used to in Greek mythology to describe Zeuss's nine daughters who presided over the arts.
Used most commonly when inspiration and creativity are primary considerations.
Tough crowd...noting the "sponsor" and "calls for help" referring back to the original question, helping people achieve their goals, these would be strong indicators to me, that the term is appropriate as offered? From Wikipedia:
The Muses were both the embodiments and sponsors of performed metrical speech: mousike (hence the English term "music") was just "one of the arts of the Muses". Others included Science, Geography, Mathematics, Philosophy, and especially Art, Drama, and inspiration. Some authors invoke Muses when writing poetry, hymns or epic history. The invocation typically occurs at or near the beginning, and calls for help or inspiration, or simply invites the Muse to sing through the author.