Manifesting your purpose is a man's duty and bringing the former to realization is in conjunction with the kind of feeds you take in.
Feeds in this sense is simply the consumptions and materials that you take in for a balance growth.
The purpose given to you requires a defined feed/food that you have to take in daily for you to grow into maturity and realization.
The defined feed is required for your defined purpose. You have to daily feed yourself with the right diet for your purpose to be realized. Your feed must align with your purpose. You cannot take that which will destroy the purpose structure in you but rather, that which will build up your purpose.
Your feed may be unpleasant in the eyes of other men but you have to realise that it is made for you.
Imagine john the Baptist eating locust and wild honey throughout his days in the wilderness
What about Daniel and friends who just took vegetables and water in their days.
Understanding your purpose and knowing the right meal for it is fundamental in fulfillment
When you eat, take a balance diet and be sure of fulfillment as you take time to work out your life.
Have a nice day