It is the single change everyone can make with the biggest impact. But don't worry, a) you are old enough that you don't matter b) you will see the future vegan because we would have to grind everything else to 0 if we want to support the animal industry, it alone will increase temperature by 2°C and from 3°C and upwards there is no more animal industry possible due to harvest loss and increased energy demand. Just chill and think you have done more than every vegan because you are not driving a car, well done, you are the one with no car.