"When you are aspiring to the highest place, it is honorable to reach the second or even the third rank."
-- Cicero
This is what the lower class should learn. Because lower class judge their capabilities, they tend to aim really low and sometimes they achieve it.
Why not set your goal and aspiration to the highest level so that you can adjust your behavior and habits early on. With enough preparation and you are ready, your goal will open up to you. You will discover capabilities you never thought you had or can do. At any case that you were unable to attain what you wished for, what you reach will compensate all the work you had put to it.