When Someone Shows You Who They Are Believe Them - Maya Angelou
It shows support and credit for them to continue on with what makes them who they are.
You never know what you are doing to someone if you are negative towards what they care so much about.
They might have something great going but it just took your one bad negative comment to take them away from their future.
Be kind when possible instead of taking away confidence from what doesn't even involve you in the first place.
They might be something that is impossible to you, but you don't have to go in that direction.
All you have to do is give encouragement towards what makes them happy.