I can reorganize itmes between my heros when I rest.
If I have items giving more life points to a hero, and if my hero is heavly wounded, can I take off these items from my hero if it kills him ?
Or do I have to follow the Self Sacrifice idea on page 27 of the rules ?
If you do what you are saying it will kill the hero and you're not allowed to voluntarily kill your hero.
Here's this from the FAQ:
Q. If a Hero has more Wounds than his basic Life, being
kept alive by a card that gives him extra Life, can he
move that card during a Rest, thus killing him?
A. No, Heroes can never voluntarily kill themselves. However,
during a Rest you may swap the card with extra Life for another
card that still gives you enough extra Life to keep you alive. The
swapping action is considered to be instantaneous.