well ...
how could i prevent me to kill my party and heal me during fight?
tring to be autosuficent?
Wrathful Healing handles the healing part really. You just need to come up with a way to deal twice the amount of damage you wish to heal. IE got 200hp? Deal 400 for full healing each round. FB is pretty much for a deathball mode.
Edit - btw it's DC 20 not ten. Oops. Anyway, make the Will Save and you'll be fine. Early in your levels pick up Steadfast Determination, you'll use your ConMod instead of your WisMod for Will Saves. Assuming you started with double 18s in Str/Con, are using Greater Rage though a Berserker weapon, and picked up a +2 Resistance item you'll save looks like this: +14 = 2 (barb) + 3 (greater rage) + 7 (con) + 2 (resistance), you need a 6 to win it, or 70% success chance. Once your iems can make the needed Will Save, retain out Steadfeast for a combat oriented feat.
And if you're really worried, tell the spellcast to prepare Sadism (BoVD) for you. You have a +X luck bonus to attack, saves, and skill checks where X is the damage you dealt this turn / 10. IE that build of mine would be getting a +84 bonus per hit. Also, Crystal Mask of Mind Armor(MiC, 10k) gives a +4 insight bonus to saves which can be helpful too.
Edit 2 - Had a funny thought. Say you get ambushed and shoved into Frenzy. Upon seeing the animal the DM asks for knowledge checks and you tell him you are under Frenzy and cannot make such a such a check. After killing them while under Sadism, you make your free action save and then make your knowledge check to ID the dead creature. Assuming you have 1 rank in the appropriate Knowledge skill, you could have a +600 bonus to the check. The world's smartest professor, known for his advancements in DNA mapping, is just an illiterate savage.