Path of the Psycho(unpolished)

in becoming a barbarian you lost apart of your psyche that you won't be able to get back however the path of the psycho uses ther damage mind to bolster there strength  

frantic force (change name )

While raging, you can choose to frenzy. You can make a single melee weapon attack you take one of your hit dice and roll it however you take this damage
(p.s. the damage you take is physic damage ) and add +2 to your next attack

fear of the Mindless

when you use frantic force you force all creatures within a 30 foot radius to make a wisdom saving throw, and if the saving throw fails, the target is frightened of you until the end of your next turn.

in addition You can’t be frightened while raging.

Intimidating Presence

Beginning at 10th level, you can use your action to frighten someone with your menacing presence. When you do so, choose one creature that you can see within 30 feet of you. If the creature can see or hear you, it must succeed on a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Charisma modifier) or be frightened of you until the end of your next turn. On subsequent turns, you can use your action to extend the duration of this effect on the frightened creature until the end of your next turn. This effect ends if the creature ends its turn out of line of sight or more than 60 feet away from you.

If the creature succeeds on its saving throw, you can’t use this feature on that creature again for 24 hours.

infectious insanity

Starting at 14th level, All creatures with the frightened condition take frantic force damage as if your insanity had spread like the plague