I'd say, "Not at all." A lot of people can't get beyond a certain level no matter what their social class (I'm assuming you're talking education, material wealth et cetera as separating one class from another) Even multi-millionaires can feel insecure aobut their self-esteem, for example. It gets down to a personal interpretation as to what is enough, at each of the levels to each of us.
A lot of people think of self-actualization as the pinnacle. Self-actualization, as far as I understand it, is expanding into all of your areas of knowledge, learning about the self. But there is one higher than this. It is called Self REALIZATION. This is when self-actualising - being the best one can be in all areas in which one is interested - takes that quantum leap (which generally comes as an epithany, "by God's Grace" as some put it) into knowing what and who one really is. Self-image is identified as what it is and the words, " I am" -with nothing following in it, describes (as best words can) what we know we are.