this is the original concept. a light bulb and a speech bubble. light bulb represents life, ideas, energy. speech bubble to show that you are a speaking and training firm. the speech bubble is subtle though, can you see it?
and i develop it into this. still the same concept but inside the circle, it suppose to be the light come out of the light bulb. i think this is better. the shape is simple and the style is similar to what you show in your example on the design brief.