For me it's a sense of adventure -- finding pleasure in small things. Like sitting in a coffee shop and watching children; couples and just marvelling at the beauty of relationships/people relating with love and kindness to each other.
That's a good one, voiceovergal - and so often, I feel, a sense of adventure is the flip side of fearfulness or apprehension - if we could just make sure it always went the positive way into adventurousness, life would be that much more creative.