Yes, and another possibility that Master Lin suggest is family ancestors. I use this sometimes: my grandparents and even great, great grandparents whom I never met.
If there ever has been any teachers or mentors or guides in your life that you have respect for, that can work well.
Also, along with the idea of the future you, you can create whatever Master you would like to have.
Lately, though I am a religious Jew and a rabbi, I am finding more and more that "The Master's Energy" is in fact to some extent, "all of the above".
In other words, "The Master" no matter how or who or what or when, is in reality, "The Master within". This "Master's Energy" is a kind of shorthand for the highest energy that you can conjure up.
The same energy that led you to SFQ or anything good in your life, is "Master's Energy". The need to personify it or name it, is really more of a way of focusing than anything else, I think.
AS it says in the Tao Te Ching,
Quote:
A way that can be followed is not the True Way
A name that can be named is not the True Name
Using names is the origin of Heaven and Earth
Nameless is the origin of myriad things
Therefore, without intention, you see the mystery
Using intention, you see manifestations
These two are the same
When they manifest they are given different names
Their sameness is the mystery
The mystery within mystery
The door to all treasures
