If I am hungry for attention, the world's ways of gaining attention will taste sweet to me. If I am hungry for (in need of) love, the world's conditional love will seem sweet to me. If I am hungry for security, the world's fleeting security will seem sweet to me. No matter what area of my life it is, if I don't go to God seeking His fullness, I will become filled with bitterness. Bitterness will then take over until God will not even seem like a good source of fullness.
This is why we read in Hosea 10:12 to "sow to yourselves in righteousness, reap in mercy, break up the fallow ground: for it is time to seek the Lord, till He come and rain righteousness upon you." It is time to be filled with God in every area of our lives. Let us let God break up the bitter soil in our hearts, so the Word of God can be sown > watered > grown in our hearts and we become filled with ALL the fullness of God, desiring no bitter thing.