The parsha reads:
וְזָכַרְתָּ֣ אֶת־כָּל־הַדֶּ֗רֶךְ אֲשֶׁ֨ר הֹלִֽיכֲךָ֜ יְהוָ֧ה אֱלֹהֶ֛יךָ זֶ֛ה אַרְבָּעִ֥ים שָׁנָ֖ה בַּמִּדְבָּ֑ר לְמַ֨עַן עַנֹּֽתְךָ֜ לְנַסֹּֽתְךָ֗ לָדַ֜עַת אֶת־אֲשֶׁ֧ר בִּֽלְבָבְךָ֛ הֲתִשְׁמֹ֥ר מצותו [מִצְוֺתָ֖יו] אִם־לֹֽא׃
Remember the long way that the LORD your God has made you travel in the wilderness these past forty years, that He might test you by hardships to learn what was in your hearts: whether you would keep His commandments or not.
וַֽיְעַנְּךָ֮ וַיַּרְעִבֶךָ֒ וַיַּֽאֲכִֽלְךָ֤ אֶת הַמָּן֙ אֲשֶׁ֣ר לֹא־יָדַ֔עְתָּ וְלֹ֥א יָדְע֖וּן אֲבֹתֶ֑יךָ לְמַ֣עַן הוֹדִֽעֲךָ֗ כִּ֠י לֹ֣א עַל־הַלֶּ֤חֶם לְבַדּוֹ֙ יִחְיֶ֣ה הָֽאָדָ֔ם כִּ֛י עַל־כָּל־מוֹצָ֥א פִֽי־יְהוָ֖ה יִחְיֶ֥ה הָאָדָֽם׃
He subjected you to the hardship of hunger and then gave you manna to eat, which neither you nor your fathers had ever known, in order to teach you that man does not live on bread alone, but that man may live on anything that the LORD decrees.
The book of Devarim is permeated with "historical weaving". That is to say, drawing the thread through history, and tying it off in the future. The ultimate model for learning from one's mistakes. It does so in a delicate fashion. Rather than criticising the past and promising a better future like we so often do, it pinpoints lessons we can learn from the past. We can both learn from our mistakes and from actions that didn't fully realise their potential. The past is a one of the tool we are supposed to use in order to better ourselves, we must not live in the past, or regret the past. We must simply make the future different. There are no guarantees of quality, only that it will different.
I would like to bless us, that we may have the ability to better ourselves and forge a future which we are all proud of.