Just surprise them and they become interested in them, and then they'll be asking what you did. Because at the time we discuss it with them about Bitcoin, the more they hate to hear it but at the moment they will see you improving, which gives them the courage to know about it. Let us wait for the time they will come to us, that was the right time to share ideas about it as it was useless to share at a time when they don't have interest, you'll just be wasting your time. Until they are still thinking negatively about Bitcoin, nothing it gets in, they will still believe what they heard around -scams and FUDs.