In general, a lot of the thinking about creativity is very old-fashioned and much influenced by notions of artistic creativity. Creativity is also seen as the opposite of being formal. Yet music and ballet are both creative and formal at the same time. Using Tools and Techniques Attitudes are fine, but tools are more reliable. These attitudes may work in the presence of the instructor but are difficult to resurrect later.
Tools are much more concrete.
Once you have built up skill and confidence in the use of the Lateral Thinking tools, then you can apply these to any situation at any time. You do not have to wait until you feel inspired. It is sometimes argued that tools are fine, but without motivation tools never get used. There are two approaches here. You can motivate and inspire people to be creative and then teach them the tools.