"1a : to come next after another in office or position or in possession of an estate especially : to inherit sovereignty, rank, or title " and "2a : to turn out well, b : to attain a desired object or end "
When people use the word to mean securing a good position in a corporation, are they consciously using the 1a definition?
In casual use I always thought it's just a practical word to mean whether you attained your goal in a specific contextz, so general "success" should naturally mean whether you are content with your life.