Use set notation to list all the elements in the following set. $\{x: x$ is a natural number less than 7$\}$

Step 1 ：The question is asking for all the natural numbers less than 7. The natural numbers are the set of positive integers, starting from 1. So, we need to list all the natural numbers from 1 to 6.

Step 2 ：Final Answer: The set of all natural numbers less than 7 is \(\boxed{\{1, 2, 3, 4, 5, 6\}}\).