http://www.admining.net/challenges-of-starting-a-forum/
Every admin regrets a decision at some point, but there is no reason to worry yourself. You may feel bad or regret banning someone, adding a mod, messing up the forum, etc but you need to understand that you’re going to have to make decisions from time to time and it may not have the outcome you expected. These feelings are normal, and I’m sure if you did something then it was the better of the community and thus…there is no reason to regret your decision.
Mistakes happen, but leave them in the past and work towards the future.
Have you ever done anything you regret as an admin?