I don't know what it is, but autopay causes me so much mental load. Instead I go over my bills every two weeks, following the tune of my paycheck. Every two weeks I check all credit cards, pay my mortgage, utilities, etc.
What I think trips people up is accounting for future expenses. The personal finance tools I've checked out focus on historical transactions but fail to put this to use and forecast future transactions. I set up GNUCash[1] to automatically create all the random monthly bills up to 3 months ahead of time, including a guess at CC totals.
I still check monthly, but its mostly just confirming nobody's stolen my card and updating my investments, which I can't forecast ahead of time =)