An adventure is, by definition, a situation whose outcome is uncertain — which is why the comfortable life contains none and why people who have lived only comfortably often feel they have not quite lived. Nasreddin did not seek danger, but he did not flee uncertainty, and the difference between those two stances is the whole of what we call courage. The story you will tell about your life is being written in the moments you chose to stay in the room with the uncertain thing.
Each step builds on the last.