How do you convey to someone attracted to you that you don't have big goals in life, and instead are satisfied with mediocrity ?

I'm done with fighting for something that I don't even want in life simply because others tell me it's normal and attractive. Not everyone is destined for greatness, and in fact this whole thing felt like a charade to me, given that the majority of people end up being mediocre, not standing out in any regard for their whole lives. Giving up has been the most freeing experience for me as a man.
Why do I ask the question in the title ? Some time ago at a friends wedding, I met a woman so passionate about her work that I lost myself in time in admiration of her. We king of got off, and she asked me out for a date, but lurking on twox, askwomen and relationship advice, I've reached the conclusion that I'm part of the undesirables, I am the type of man without any drive in life, and I am the type of man many women regret wasting their lives with. I don't feel bitter about it, and respect this desire, but it feels fair that I make this known to her as early as possible, as to not make her think I've been using her or misleading her. How do I do this without being self-deprecating, self-defeating ? Without humiliating myself or her in the process ?
EDIT: Thank you all for your kind words. It has helped brightened my day knowing that being simple isn't really that bad.


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