An excellent video of Barry Schwartz talking about "The Paradox of Choice and the Secret of Happiness". He explain how easily we blame ourself everyday because we are trying to do the right thing when there is so many choice.
The secret is to have limited choice, this way our expectation is lower (reasonnable?)and pleasant surprise can happen more often.

That's what we are trying to do with Marie since Arthur is born. We don't have high expectation, like killing ALL the todo list items, we rather deal with the more important or approriate one first. This way we have less pressure and we can enjoy quality time more often.

And you, what is your secret for happiness ?