i climbed up a vertical rock wall outdoors to a heigh of about 40 ft, solo, using only a short lanyard for clipping into protection (technical name is "daisy chain solo climb").

there were about 4 moments where i had 5 seconds of having zero protection, and it was a moderately challenging climb. meaning, there were 20 seconds total of being very close to ending up dead or severely injured. however, i was under an enthenogen and it was a wonderful sunny day, so it was not scary.