I do not have a role model, I've never had one and I do not really understand the concept of having one. Isn't it kind of decreasing your freedom, setting up restrictions which limits your ability become who you really want to be?
Personally, I simply do what feels right, I try to be a honorable, healthy and just man who lives in harmony with his surroundings and himself as best as I can. And thats it.
But what you feel is right had to have been based off a criteria that you picked up in previous experiences.
How did we learn to think, believe and follow that holding the door for someone who's got their hands full is considered a positive, kind and polite gesture? We could've picked up that from seeing this happen with someone else (who received positive feedback for it, which you connected that association), or it could've happened to you in the past where you were relieved someone was willing to grab the door while you were straddling 8 grocery bags in your hands.
The major difference between that one encounter with the person at the door versus your role model is that the latter just happens to do things that change your life a LOT.
My sister and brother-in-law are my role models. My mentality of a role model isn't explicitly to be more like that person, but more so to pick up their sets of values that you feel will positively impact your life. For me, I look up to them to be more independent. Why? Normally, people look up to their parents since they've been through more of life than you have, but I can tell they've advanced further in being independent than my parents have at their age. Clearly they're doing something right, and if anything, I could learn a lot from them. I don't want to stagnate my life like my parents have done this whole time.
For you, maybe it is better to think of it less as a "person with a ton of good values" and more like all the "good values I've observed, adopted and compiled into a collective mass". Because for some people, it may not be just the one and only person.
I try my best to be a good role model to my junior colleagues because when I was in their position as an intern, I didn't experience nor understand how the customer-service communication works, or why it works that way. The only thing I could think of doing was picking up the same values as my senior colleagues so that I can make sense of what values I should harbor and why it will be beneficial for my own cause. It's not so much to restrict what I can/can't say or do, but to understand the value in what I can/can't say or do. Telling someone "let me get back to you on that" sounds waaaay better than "I don't know - nobody told me anything".