Ignore Them
Somebody out there thinks you're an idiot. Somebody out there thinks you're brilliant. Ignore them both and carry on. - Jack Butcher
When you believe in something and put in work that's visible to the public, you will inevitably be called either an idiot or brilliant. It is bound to happen but should not stop you and change your path in pursuing the thing that you truly believe in.
There's beauty in achieving your goals and then looking back at all the naysayers and supporters and realise how they were so wrong.