Fixup some images

vor 8 Monaten · 9c94885d34
--- a/slides/habit_tracker.jpg
+++ b/slides/habit_tracker.jpg
--- a/slides/hedonic_threadmill.jpg
+++ b/slides/hedonic_threadmill.jpg
--- a/slides/motivation.md
+++ b/slides/motivation.md
@@ -41,7 +41,7 @@ We want to achieve something in the future.
 - requires more and more demanding goals <!-- .element: class="fragment" -->

 -V-

 <!-- .slide: data-background-image="slides/hedonic_treadmill.jpg" data-background-opacity="0.1" -->
 ### Hedonic treadmill <a class="reference" href="https://en.wikipedia.org/wiki/Hedonic_treadmill">🔗</a>

 > Humans quickly return to a relatively stable level of happiness despite major positive or negative events.
--- a/slides/todo_today.jpg
+++ b/slides/todo_today.jpg