It's My Life (Don't forget to capitalize the first letter of every word in a title)

The life* is a chance to be aware about a lot of things.
We need to understand the world, the people, the community, and the science (or "the sciences").
If you need want to improve in all this these things you have to learn more and more.

*"The life" is a little vague, you could start the sentence with 1."Life" if you want to refer to all life in general as opposed to a singular life or 2."Your life" if you want to directly affect the reader, or even 3. "My Life" if you want it to serve as a reminder to yourself. :)