Purpose can be regarded as a verb or a noun. You can consider purpose to be a verb, something that is done with intention to obtain an object or an objective, requiring motivation and a reason or justification to exist. If you consider purpose to be a noun, then it is the reason for which something is designed or created to exist. You do not have to justify your existence.
DEVOTION to being the best version of yourself is all that is required. Place DEVOTION in the earth centre gua to remind you that even the smallest task done with purpose aligns you with your goals.