Jesus calls us to be disciples, radical as he.
Paul calls us to dare to be radical, to actually consider changing one's mind, to be transformed. It is radical indeed to consider discipleship. It is radical to truly ponder changing my mind, my self-perception as unchanging, to truly consider I need changing.
It is radical to love without forethought but as a simple response to The First Love.
But be not hard on yourself.
Most often the most radical thing to do is to simply Believe.