If you want to be vegan, more power to you. But please talk to your doctor first (and optionally do a bunch of reading from non-specifically-vegan sources about how the food is grown). The nutrition-feasibility, health benefits, and current, real-world environmental impact are frequently and loudly lied about by vegans.
How many vegans does it take to screw in a lightbulb?
Two.
One to screw in the lightbulb and the other to tell everybody they are vegan.