classic waka stream

見し夢をちがへ侘びぬる秋の夜に
寐難きものと思ひしりぬる
Roma-ji

Mishi yume o chigae wabinuru aki no yo ni negataki mono to omoi shirinuru

English Translation
On an autumn night
when I cannot turn aside
the dream I have dreamed,
I have learned at last how hard
a thing it is to fall asleep.
Meaning
On an autumn night when I cannot turn aside the dream I dreamed, I have learned at last how hard a thing it is to fall asleep.
Commentary
26 Exchanges with the Lady of the Jōganden

Toward the end of the twelfth month the lady of the Jōganden withdrew to the house on the west. On the last day of the month there was a sudden earthquake, and from midday on it went on rumbling and rattling while she sat watching it alone; and so the year turned to the first of Anna. About midday on New Year's Day, since no men were about among the guest's household, all was quiet. Hearing that the lady was still next door, they laughed together over what one waits for on such a day; and while they were at it, someone idly fetched a little figure of a man made of millet, pressed it against the leg-end of the pheasant from before, wrote on it, and sent it in to the lady. She dried some seaweed, tore it into short pieces, tied them together, shifted the load to the end of the pole, carved a calf onto the leg that had been thin, and sent it back larger than it had come. When the day was well up the festival food was served; the same was done in this house, and the fifteenth also passed in the usual way. The third month came. A letter that seemed meant for the guest's household was misdelivered here. It read that he could not leave things as they were and thought of calling before long, but that there might be someone who would rather it were not he. Since the lady had long been used to seeing such things, the author supposed this was how it went; even so she did not let it pass, but wrote a few words very small, and sent it back saying that it should be taken to that lady. When the lady had read it a reply came at once. Since this lady attended the Crown Prince almost as a mother, she was bound to go to the palace. She said again and again that she could not stay as she was, and so the author called on her in the evening. Just then voices were heard on the other side; the lady kept saying so, so, but the author would not attend to it, and the lady seemed to be growing drowsy as one does in the early evening. Then someone came walking up and made an announcement, and the author went home without any ease of mind. The next evening the lady went to the palace. In the fifth month, when she withdrew to put off mourning for the Emperor, it had been arranged that she should come here as before; but saying she had seen something inauspicious in a dream, she withdrew to the other house. Since portents kept coming in dreams, and she wished there were some way of averting them, in the seventh month, on a night of very bright moon, she sent a poem. Four poems on dreams follow, and then an exchange on a river.
The author was a daughter of Fujiwara no Tomoyasu. The lady of the Jōganden was a daughter of Fujiwara no Morosuke and a consort of the late Emperor Murakami, and Kaneie's sister; the text gives no name, and she is taken to be Fujiwara no Tōshi. At the end of the previous year she had withdrawn to the house immediately west of the author's, and the exchanges that follow depend upon that nearness. The writer of the misdelivered letter is Kaneie, third son of Fujiwara no Morosuke, who would rise to be regent and chancellor.
It is a night of very bright moon in the seventh month of the first year of Anna, and the place is the lady's residence.
In the fifth month, when she withdrew to put off mourning for the Emperor, it had been settled that she should come here as before; but saying she had seen something inauspicious in a dream, she withdrew elsewhere. Since portents kept coming in dreams afterward, and she wished for some way of averting them, she sent this poem.
The author answered with "Samo koso wa chigauru yume wa katakarame awade hodo furu mi sae uki kana," and four poems on dreams follow.

The opening means the dream she has already dreamed, referring to the ominous portents that kept coming. The verb in the second line names the rite performed to turn aside the ill of a bad dream, and the phrase says that the rite is not working and she is at a loss. The circumstance of having stayed away on account of a dream stands behind the poem as its premise. The third line fixes the scene on a night of bright moon and carries into the fourth, which means that sleep is hard to come by: if one is trying to avoid a dream one cannot sleep at all, an argument that follows naturally from the word for turning a dream aside. The close states the realization flatly. An excuse for not visiting is carried on the image of a sleepless autumn night, and what might have sounded like a pretext is thereby made unobjectionable.
Source
Kagero Nikki
Other