According to Osho, the 'fighter' in you isn’t a problem to be suppressed; the problem is the inner split that ego creates by resisting what you are. Let-go means be totally a fighter, without guilt. In totality, the rigidity that sustains ego dissolves into a melting heart; the reward arises naturally when you’re sincere and whole.
If you feel like a fighter, stop fighting that feeling; live it fully and kindly, and the hard “me” will soften on its own.