It's luck, of a sorts, but neither good nor ill. My luck is just average. Never an off day, never the stars align, so to speak. Everything is stable, and the expected outcome is, well, more expected than normal? Like, if I get fired, I know it's because I was under-performing. If there's a layoff and I don't make the cut, I know that social gaffe didn't give my boss an unprofessional bias. And if I get a raise, I earned it on merit, not by brown nosing. My life is stable.
When I was a teenager, I loved Babylon 5. There's a quote, about how terrible it would be to know that life is fair, and that everything bad happened for a reason. But, you know, I disagree. There is something deeply satisfying in knowing that it's my actions, not my ethnicity, that define my outcomes. It is wonderful not to have to worry about my sexuality or my gender getting in the way of life. When the dice are biased in your favor, you should embrace chaos. But if the dice are biased against you, better to avoid games of chance.
I would be totally sold on this power if it was just protection from bigotry, bias, and the general unfairness of society.
But Stability is about more than just the absence of unfairness: it's about the absence of variance. If I roll a six sided die, it will be either a 3 or a 4, because that's what's average. Blackjack is one of the fairest forms of gambling, with a house edge of just 1%, so I can expect to lose about 1% of my cash every time I play a hand. You'd think I could have real fun exploiting this, walk out when I'm winning and keep things from balancing out, but the universe has a way about it. The last time I tried that, I lost my wallet. And this power being what it was, it was returned the next day, sans cash. I didn't even bother to cancel my credit cards - I knew it'd show up, and I know the odds on identity fraud.
Really, it's a great power. I just have one complaint, just the one, with this power. It turns out that while looking up average life expectancy tables IS really motivating, it's also rather disconcerting. I'm going to have a perfectly average life for the next twelve thousand, eighty-one days. And a half. And not a single one of those will be an off day, nor will the stars align to bless me. Just... average days. Twelve thousand of them.