"What's the alternative" is one of my favourite questions. Use it in response to any question that holds limiting beliefs.

You're being unrealistic. What’s the alternative?
Your standards are too high. What’s the alternative?
You have so much discipline. What’s the alternative?
People will stare and comment. What’s the alternative?

Every day you get to choose between the life you could lead, if only you weren’t afraid, and the one you actually lead that fear (or naysayers) has led you to.

The alternative to being the best version of yourself isn’t being the worse version of yourself. At least villains have something about them. They stand for a cause. The alternative is being an average version of you. The one that settles. Makes excuses. Doesn’t really bother. The one that takes their unique gifts and just throws them away.