You will die. You will not ...

You will die. You will not live forever. Nor will any man nor any thing. Nothing is immortal. But only to us is it given to know that we must die. And that is a great gift: the gift of selfhood. For we have only what we know we must lose, what we are willing to lose... That selfhood which is our torment, and our treasure, and our humanity, does not endure. It changes; it is gone, a wave on the sea. Would you have the sea grow still and the tides cease, to save one wave, to save yourself?
You will die. You will not live forever. Nor will any man nor any thing. Nothing is immortal. But only to us is it given to know that we must die. And that is a great gift: the gift of selfhood. For we have only what we know we must lose, what we are willing to lose... That selfhood which is our torment, and our treasure, and our humanity, does not endure. It changes; it is gone, a wave on the sea. Would you have the sea grow still and the tides cease, to save one wave, to save yourself?

Quotes from the same author

There is not much you can say about a baby unless you are talking with its father or another mother or nurse; infants are not part of the realm of ordinary language, talk is inadequate to them as they are inadequate to talk.
Men call women faithless, changeable, and though they say it in jealousy of their own ever-threatened sexual honor, there is some truth in it. We can change our life, our being; no matter what our will is, we are changed. As the moon changes yet is one, so we are virgin, wife, mother, grandmother. For all their restlessness, men are who they are; once they put on the man's toga they will not change again; so they make a virtue of that rigidity and resist whatever might soften it and set them free.
A child free from the guilt of ownership and the burden of economic competition will grow up with the will to do what needs doing and the capacity for joy in doing it. It is useless work that darkens the heart. The delight of the nursing mother, of the scholar, of the successful hunter, of the good cook, of the skilful maker, of anyone doing needed work and doing it well, - this durable joy is perhaps the deepest source of human affection and of sociality as a whole.
If I had to pick a hero, it would be Charles Darwin--the size of his mind, which included all that scientific curiosity and knowledge seeking, and the ability to put it all together. There is a genuine spirituality about Darwin's thinking.
If you have to find devices to coax yourself to stay focused on writing, perhaps you should not be writing what you're writing. And if this lack of motivation is a constant problem, perhaps writing is not your forte. I mean, what is the problem? If writing bores you, that is pretty fatal. If that is not the case, but you find that it is hard going and it just doesn't flow, well, what did you expect? It is work; art is work.