because you enjoy it

Today I stood in my room after having completed everything I could possibly be oligated to do and said to myself "What shall I pursue now?"
This is essential saying "What shall I conquer?" or "What new part of the world (knowledge or accomoplishment) may I take hold of and subdue so that I can use it for myself?"
This is, of course, not good. It is rooted in fear, doubt that I have enough now to get me through life, a hunger for power, constant nervousness, dissatisfaction, desperation to attain meaning, etc.

Solution: one (person) must do things not because he/she needs to, but because they WANT to, and not because they will be lacking without it, but because it brings them more joy. This second parallel is NOT a logical fallacy.
'Lacking' means not following the natural order, following your human design, knowing and living with the one true God, etc. This person, NOT 'lacking', without doing anything but accepting God, ALEADY has all he/she needs. However, doing stuff brings this person joy. Why? 'Joy' is caused by excercising creativity and making beautiful art (see post June 28 "Concept of Art"). This is a charachter of God that is very close to the fundamental, and he has given us this charachter, a charachter of creativity.
We join with God in his work, not depending on ourselves but simply coming along for the ride and letting God do the work through us. Yes, we will suffer and doubt all the time, but joining God in a fun work is the underlying motivation, I hope. Other motivations include the command to take care of the earth, care for the widow and orphan, and preach the good news to all nations, joy from seeing changed lives and planet, eternal rewards in heaven, etc etc.
You will not just do work for the joy ride, mind you. Other legitmate underlying motivations include anger at injustice, burden and sorrow for the lost, even irritation at certain jobs poorly done in the secular realms.

Anyway, the main point is this: don't do stuff because you feel you need to, do it because you WANT to.
Note: doing good is rarely a joy ride, I must say again. But it's like going to college. Do you want to spend all that money? No! Is it a good investment? Yes. Will making that decision bring you the most happiness in the long run? Yes. So do you WANT to go to college even though you don't feel like it? YES. Same principle applies to Gods kingdom.