Try not to pay attention to those who will try to make life miserable for you. There will be a lot of those-in the official capacity as well as the self-appointed. Suffer them if you can't escape them, but once you have steered clear of them, give them the shortest shrift possible. Above all, try to avoid telling stories about the unjust treatment you received at their hands; avoid it no matter how receptive your audience may be. Tales of this sort extend the existence of your antagonists.