Achievement is what makes oneself in oneself and other/s. It doesn't matter to which field of work you belong. But it definitely matters on how you excel(one to many by "many to many'). Gurus may be ten for any practitioner towards excellence. FIELDER IS ONE WHO KNOWS HIS/HER FIELD.--Bhagavadgita.

క్షేత్రమును ఎరిగిన వాడిని క్షేత్రజ్ఞుడు అందురు . ----భగవద్గీత .