It's better to be naive than jaded

The last sentence of this piece makes it for me, and it's this optimism that generally gets me through my day:

But I think we need to make a conscious effort to realize: every time is different. Even if you put the same effort in and make the same decisions, the world, the people in it, and you, have all changed. What worked before, might not work now. The idea that failed before, well - maybe its day has come.