Well, I finally understood the problem, my problem was that I was being tricked by the sentence order, something thats so basic but that got me on this one. My problem was that I was trying to translate the following parts as separated UNITS:

自分の食べ物
人間にごちそうすることだ

As u see, if we looked at it just like that, trying to translate “人間にごちそうする” and AFTER that apply it to the object “自分の食べ物” the thing results in a mess. But why did I take “人間にごちそうする” as a unit? Because in the 3 languages I know: Spanish my mother language, english and french, にごちそうする comes right after 人間 which implies they act as one unit. I totally forgot or better said “over sought” the most recurrent sentence in japanese learning: “Sentence order doesnt matter as long as the verb is at the end, the particles dictate the purpose of every sub-sentence or word”. So my correct analysis (in my head oc) should have been:
自分の食べ物 : Object of the verb
人間 : Direction of what happens
ごちそうすることだ : What happens.

And so the translation goes: “You will treat humans with your own food”.

I will leave the explanation here so anyone can see the process of my thought to reconstruct the problem and what was my huge mistake. If you are interested in the story, its classical japanese mythology and you can read it here: http://hukumusume.com/douwa/betu/minwa/05/23.htm

Its VERY good reading practice for grammar practicing and getting to know more of what japanese kids are told when they are young.
If you liked the story, here u have the index of all the stories types they have and if u click on one u will find a lot of stories in each category:

http://hukumusume.com/douwa/betu/

PS: About The Little Prince… Its already difficult to understand all the corners it has in spanish… not even gonna try in Japanese.

• This reply was modified 9 years, 10 months ago by  Juan Larroucau de Magalhaes-Calvet.

Yeh, thats what killed me, normally Japanese sentences follow and order but, as its not mandatory, things like this one happen from time to time