Can anybody correct the mistakes in the following paragraphs?

I will edit it in a way I would feel comfortable writing the same message, not just grammatical changes.

My Psychological Conquest

Now that I have the necessary understanding of how the human brain works, I am enthusiastically (even zealously) working on conquering the magnificent field of Psychology! Because I use this knowledge to influence human brains world-wide, I gain a lot from the world. In return I give much more, however. I hope that even after my death, my work remains tangible and known. Long live Psychology!

Even with my edits this passage is vague

I gain a lot (of what?) from the world?

I give much more (of what?) back to the world?

MOVING ON:

What is death?

Death is simply the transformation of a living thing into a non-living thing. It's merely a chemical change. One should never fear death because it is known that eventually we will all become inanimate substances.

Why do men remain bachelors?

Once, an interviewer asked Ratan Tata: "Why have you remained bachelor all your life?"

Tata replied "I have never come across a suitable girl".

If I had to answer such a question, I would say that every girl I met inspired me. I loved each of them equally. After meeting them, I became confused with whom I would like to select as my wife. So, therefore I have remained bachelor all my life.