?From Judaism's perspective, why is 'the self" so important and precious
(יד) הוא היה אומר, חביב אדם שנברא בצלם. חיבה יתרה נודעת לו שנברא בצלם, שנאמר (בראשית ט), כי בצלם אלהים עשה את האדם.
(14) He would say: Beloved is humankind, as they were created in the image of God. A deeper love is revealed to those created in God's image, as it says (Genesis 9:6) "for in God's own image God made humankind."
(Rabbi Akiva ben Yoseph (c. 50-137 CE, Roman Judea
... הֲדָא הוּא דִכְתִיב (משלי יא, יז): גֹּמֵל נַפְשׁוֹ אִישׁ חָסֶד, זֶה הִלֵּל הַזָּקֵן, שֶׁבְּשָׁעָה שֶׁהָיָה נִפְטַר מִתַּלְמִידָיו הָיָה מְהַלֵּךְ וְהוֹלֵךְ עִמָּם, אָמְרוּ לוֹ תַּלְמִידָיו רַבֵּנוּ לְהֵיכָן אַתָּה הוֹלֵךְ אָמַר לָהֶם לַעֲשׂוֹת מִצְוָה, אָמְרוּ לוֹ וְכִי מַה מִּצְוָה זוֹ, אָמַר לָהֶן לִרְחֹץ בְּבֵית הַמֶּרְחָץ, אָמְרוּ לוֹ וְכִי זוֹ מִצְוָה הִיא, אָמַר לָהֶם, הֵן. מָה אִם אִיקוֹנִין שֶׁל מְלָכִים שֶׁמַּעֲמִידִים אוֹתָן בְּבָתֵּי טַרְטִיאוֹת וּבְבָתֵּי קִרְקָסִיאוֹת, מִי שֶׁנִּתְמַנֶּה עֲלֵיהֶם הוּא מוֹרְקָן וְשׁוֹטְפָן וְהֵן מַעֲלִין לוֹ מְזוֹנוֹת, וְלֹא עוֹד אֶלָּא שֶׁהוּא מִתְגַּדֵּל עִם גְּדוֹלֵי מַלְכוּת, אֲנִי שֶׁנִּבְרֵאתִי בְּצֶלֶם וּבִדְמוּת, דִּכְתִיב (בראשית ט, ו): כִּי בְּצֶלֶם אֱלֹהִים עָשָׂה אֶת הָאָדָם, עַל אַחַת כַּמָּה וְכַמָּה.
... Here it is written, "The merciful man does good to his own soul (Proverbs 11:17)," this [refers to] Hillel the Elder, who, at the time that he was departing from his students, would walk with them. They said to him, "Rabbi, where are you walking to?" He said to them, "To fulfill a commandment!" They said to him, "And what commandment is this?" He said to them, "To bathe in the bathhouse." They said to him: "But is this really a commandment?" He said to them: "Yes. Just like regarding the statues of kings, that are set up in the theaters and the circuses, the one who is appointed over them bathes them and scrubs them, and they give him sustenance, and furthermore, he attains status with the leaders of the kingdom; I, who was created in the [Divine] Image and Form, as it is written, "For in the Image of G-d He made Man (Genesis 9:6)," even more so!...
Rabbi Abraham Joshua Heschel 20th cent. (as quoted by Rabbi Arthur Green)
"Why are we forbidden to make images of God? It is not because God is beyond all images, so that no image could possibly depict God. If that were the case, images would merely be harmless. God has an image, and that is you. You may not make the image of God because you are the image of God. The only medium in which you can make God's image is the medium of your entire life, and that is precisely what we are commanded to do. Everything you do, everything you say, each moment and the way you use it are all part of the way you build God's image. To take anything less than a full, living human being - like canvas or a piece of marble - and call it the image of God would be to diminish God, to lessen God's image.
רַבִּי שִׁמְעוֹן אוֹמֵר, הֱוֵי זָהִיר בִּקְרִיאַת שְׁמַע וּבַתְּפִלָּה. וּכְשֶׁאַתָּה מִתְפַּלֵּל, אַל תַּעַשׂ תְּפִלָּתְךָ קֶבַע, אֶלָּא רַחֲמִים וְתַחֲנוּנִים לִפְנֵי הַמָּקוֹם בָּרוּךְ הוּא, שֶׁנֶּאֱמַר (יואל ב) כִּי חַנּוּן וְרַחוּם הוּא אֶרֶךְ אַפַּיִם וְרַב חֶסֶד וְנִחָם עַל הָרָעָה. וְאַל תְּהִי רָשָׁע בִּפְנֵי עַצְמְךָ:
Rabbi Shimon said: Be careful with the reading of Shema and the prayer, And when you pray, do not make your prayer something automatic, but a plea for compassion before God, for it is said: “for he is gracious and compassionate, slow to anger, abounding in kindness, and renouncing punishment” (Joel 2:13); and be not wicked in your own esteem.
?What are some suggestions Judaism has regarding self-care
(משלי יב, כה) דאגה בלב איש ישחנה
רבי אמי ורבי אסי,
חד אמר: ישחנה מדעתו
וחד אמר: ישיחנה לאחרים
§ The Gemara explains another verse in Proverbs: “If there is anxiety in a man’s heart, let him quash it [yashḥena]” (Proverbs 12:25). Rabbi Ami and Rabbi Asi dispute the verse’s meaning. One said: He should forcefully push it [yasḥena] out of his mind. One who worries should banish his concerns from his thoughts. And one said: It means he should tell [yesiḥena] others his concerns, which will lower his anxiety.
תלמוד בבלי עבודה זרה ג:
והא אמר רב יהודה אמר רב: שתים עשרה שעות הוי היום, שלש הראשונות הקב"ה יושב ועוסק בתורה, שניות - יושב ודן את כל העולם כולו, כיון שרואה שנתחייב עולם כלייה, עומד מכסא הדין ויושב על כסא רחמים, שלישיות - יושב וזן את כל העולם כולו מקרני ראמים עד ביצי כנים, רביעיות - יושב ומשחק עם לויתן, שנאמר: (תהלים קד) לויתן זה יצרת לשחק בו
Babylonian Talmud, Avodah Zarah 3b
Yet Rav Judah said in the name of Rav: 'The day consists of twelve hours; during the first three hours, the Holy Blessed One, is occupied with the Torah, during the second three, God sits in judgment on the whole world, and when God sees that the world is so guilty as to deserve destruction, God transfers Godself from the seat of Justice to the seat of Mercy; during the third quarter,God is feeding the whole world, from the horned buffalo to the brood of vermin; during the fourth quarter God is playing with the leviathan, as it is said, "There is leviathan whom Thou hast formed to play with'? (Psalm 104:26)