When we write down any sentence, we feel as though we are decreasing entropy in the universe, because we are constructing something that has order, structure and meaning. But we need to do this while obeying the laws of physics.
Which means that when you look at the process of “person writing a sentence” as a holistic system, you will probably find that entropy was increased by that single act of thoughtful creation. This entropy increase generally comes about in ways we don’t think about, like moving, sweating, typing, or the heat given off by our brains.
So ironically, the more order we try to create in the universe through our well intentioned systems of thought, the faster we are actually causing the universe to wind down and eventually die. This is one of the odd peculiarities of being a thinking physical being.
But I wouldn’t sweat about it.