diff --git a/slides/discipline.md b/slides/discipline.md
index cb0e403..075c00a 100644
--- a/slides/discipline.md
+++ b/slides/discipline.md
@@ -100,7 +100,20 @@ Define positive habits
 and track them daily.
 
 -V-
+
+#### Why?
 <!-- .slide: data-background-color="#542" -->
+- habits help keeping our elephant in line:<!-- .element: class="fragment" -->
+    - lower need for making decisions; it is already decided
+    - less forgetting
+    - more efficient use of time = more time for doing
+- habits can evolve, we can keep improving<!-- .element: class="fragment" -->
+- incremental changes take time, habits help us make the time<!-- .element: class="fragment" -->
+- tracking habits increases the retention of habits<!-- .element: class="fragment" -->
+
+-V-
+<!-- .slide: data-background-color="#542" -->
+#### How?
 | Habit | Workout | Alcohol | Coding |
 | ------|---------|---------|------- |
 | Target| > 10 min| < 0,5 l |> 30 min|
@@ -132,7 +145,7 @@ and track them daily.
 #### One page per week <!-- .element: class="text-over-image" -->
 -V-
 <!-- .slide: data-background-color="#030" data-background-image="slides/habit_tracker_100.jpg" -->
-#### 100 weeks in a row <!-- .element: class="text-over-image" -->
+#### 100 weeks in a row<br/>(1.92 years) <!-- .element: class="text-over-image" -->
 
 ---
 <!-- .slide: data-background-color="#542" data-background="slides/todo_today.jpg" data-background-size="contain" data-background-opacity="0.4" -->