I have never met an impressive man who hadn't read more books than I

- Marcus Aurelius, probably

The following are affiliate links to Amazon. I link them in English and German though I read most of them only in English. Here are the ones that changed my life the most.

Book recommendations

Life / Social

• The courage to be disliked / Du musst nicht von allen gemocht werden
  Ichiro Kishimi and Fumitake Koga

• When I say no I feel guilty / Sag nein ohne Skrupel
  Manuel J. Smith

• No More Mr. Nice Guy / Nie mehr Mr. Nice Guy
  Robert Glover

• Models / Scheiss auf coole Sprüche
  Mark Manson

Economics / Finance / Investment

• "Economics in one lesson" by Henry Hazlitt (can be found for free as PDF)

• "The Price Of Time" by Edward Chancellor

• "A Random Walk Down Wall Street" by Burton Malkiel

• Lyn Alden's blog, most importantly this article: Most investments are bad

Daily blogs and news

• Zerohedge

• Hacker News

Pastime

• Mistborn (Series)
  Brandon Sanderson

• The Stormlight Archives (Series)
  Brandon Sanderson

• Remembrance of Earth's Past (Series, best known for the first book "Three-body problem")
  Liu Cixin

• A Collection of Unmitigated Pedantry