Who or what is our hero, the adventurer? :) Now extra long and extra easy:
Dear friend, I write to you before my great adventure The nature is, as always, on my side. Don’t worry, I am very well prepared, I booked a very talented and clever guide. I’m ready and excited to explore the world’s most mysterious and tricky roads, to open every secret door to break the mystic ancient codes. You usually trust me for my method, no whining and complaining, no big guns. I’m breaking the difficult questions into easy and simple ones. With every secret I reveal I’m getting closer to my end and some day I will see clear the last locked door, my dear friend. And when you read the records of my journey, hopefully, you won’t forget how I, the great adventurer brought treasure and found peace in my heroic death.
It seems to be more difficult as previously thought. Time for hints.
Our hero is a concept, rather than material entity