Other than that, life is basically a choose-your-own-adventure game with rules/constraints superimposed by the nature of our reality.
A painter doesn't try to imitate the colors, lighting, subject. A food painter would try to capture the senses - taste, moisture, saltiness, spiciness, temperature. A painter of a scene would try to extract emotions; the fear and chaos of a battle, the sexual tension in a romance.
I choose to observe things in the world and extract what they're really about. I don't simply build features and observe analytics. I understand the pains of a user, the emotions, the process they work through it, their frustrations and joys.
I continually try to fix problems, and fix it a little better day after day.
Sometimes I choose myself as the subject for extracting meaning.
I wonder why my own body and mind is so flawed and what can be done to make it better. How to heal faster, to run better, what triggers emotions like fear and procrastination. I pick one thing I'm bad at and see what makes me improve on it. Or observe why I do sins even when I know I shouldn't.
I pick these flaws up, experiment and improve, or see what doesn't work. I also experiment with different philosophies and ideals, plant them as a New Year's Resolution, and see how that works out over a year.
There's a good deal of enjoyment when you successfully extract meaning from something and get better and better at it each year.
So, recursively, the purpose of my life is to get better at finding the purpose of my life.
1) Repay the ancestral debt by becoming one. 2) Repay the teacher/sage debt by becoming a learned one. 3) Repay the societal debt by doing good to others.
(Mr. Graeber obviously does a much better job of summarizing them, but you get the general idea)
I took the revealed knowledge route, study Islam, study Quran, study Hadeeth. Glad I did. As side bonus my logic, reasoning and critical thinking have improved a lot.
In the end it is your choice what to believe after witnessing proofs after proofs, after proofs. Choose wisely.
1. What should we do with our lives.
2. Why is there life on this universe.
For question 1: I don't thing there's a single purpose that fits everyone. However, this doesn't mean that nothing matters and we are free to whatever we want - we are human beings after all, and there are some things that humans should not do. The obvious ones would be rape and senseless killing.
For question 2: life is just a thing that exists. Why do things exist? Why are there things in the universe, or even a universe at all? Truly mind blowing stuff in my opinion.
These 2 questions are probably related, not sure how.
Few prefer defining their purpose and influencing others with it. We call them leaders, artists, visionaries etc.
Some prefer manipulation of lack of understanding of purpose. They become a leading to force in preaching things they don't understand themselves.
For the life itself, the only purpose is reproduction
And the meaning of life is 42 (in case you need to include it in your paper as well ;-)
Human life: Do whatever role/job you like. Be happy and die at last.