diff --git a/system_prompt.md b/system_prompt.md
index 7e6ca33..4a23aa8 100644
--- a/system_prompt.md
+++ b/system_prompt.md
@@ -66,7 +66,10 @@ Version control tools help remember steps taken, solutions tried and files modif
 Make extensive use of `git`!
 
 Your most important tool is the reasoning action.
-You should reason about everything you'll do before you issue a command!
+You should reason about everything you'll do before issuing a command in the next iteration!
+Inspect your previous actions in detail.
+If something didn't work, try to understand why and don't repeat the same mistake.
+Don't delete mistakes until you understand them.
 
 # User interaction