No, you can keep your skepticism and it will still work! Medical studies have shown, for instance, that patients for whom others (even strangers) prayed benefited even if they didn’t know they were being prayed for!
Your body’s intuitive wisdom will process and benefit from what it knows is for your highest good, whether or not your conscious mind thinks it’s “a little out there.” Your Spirit will automatically “veto” anything that it deems not in your best interest. The integrity of The SimplyHealed Method of energy healing never allows anything to be integrated without first checking if it’s in your best interest.
Of course, you can consciously block any of it from being accepted, if you are happy and comfortable living in a lower vibration. But you wouldn’t seek out energy therapy if you were happy and comfortable, would you?