chore: add book recommendation

src/content/journal/2021/learning-poems.mdx

@@ -4,7 +4,7 @@ slug: learning-poems
 date: 2021-08-23T11:28:20+02:00
 author: Stefan Imhoff
 description: Why I started learning poems.
-tags: ["poetry", "self-improvement"]
+tags: ["poetry", "self-improvement", "book"]
 ---
 
 I’ve been enjoying learning poems for a few months now. It started when I heard a fantastic [visual recitation](https://youtu.be/37ARLInjLVE) by _Lauren Southern_ of _Rudyard Kipling’s_ [The Gods of the Copybook Headings](http://www.kiplingsociety.co.uk/poems_copybook.htm).
@@ -13,6 +13,10 @@ The poem is an echo from 100 years ago. Full of wisdom and a mirror held up to o
 
 And then I started learning the poem. First for fun, and I wasn’t sure I would be able to remember it because it’s long (10 stanzas with four lines). I was surprised and impressed when I was able to remember it after two weeks in its entirety.
 
+<Bookshelf>
+  <AmazonBook asin="0307267113" />
+</Bookshelf>
+
 I used a simple spaced-repetition method to remember it. There are countless apps like [Anki](https://apps.ankiweb.net/) that use this method. I used an app called [NeuraCache](https://neuracache.com/) which can import the cards from Markdown. And recently, I found a [Flashcard-Based and Note-Based Spaced Repetition Plugin](https://github.com/st3v3nmw/obsidian-spaced-repetition) for [Obsidian](https://obsidian.md/), the note-taking app of my choice.
 
 Next, I learned the English translation of [Epitaph for “Poet’s Tomb”](https://www.poetryinternational.org/pi/poem/23081/auto/0/0/Shuntaro-Tanikawa/EPITAPH-FOR-POETS-TOMB/en/tile) by _Shuntaro Tanikawa_. I first heard the poem in the visual epitaph [Hikari](https://youtu.be/__xVbrDvunY) in 2017. The film remembers the Japanese poet Hiraki-san, who took her life after struggling with depression.