The worst troll is in your head.
Internet trolls are the commenters begging for a fight, the anonymous critics eager to tear you down, the hateful packs of roving evil dwarves, out for amusement.
But the one in your head, that voice of insecurity and self-criticism, that's the one you need to be the most vigilant about.
Do not feed the troll.
Do not reason with the troll.
Do not argue with the troll.
Most of all, don't litigate. Don't make your case, call your witnesses, prove you are right. Because the troll knows how to sway a jury even better than you do.
Get off the troll train. Turn your back, walk away, ship the work.