When do I feel the happiest? I'm actually not sure 'happy' is the right word here. Maybe it's closer to 'feeling at peace', 'feeling complete', 'whole', a deep sense of 'calm and serenity'. I still choose 'happy' because there is a layer of joy, adrenaline sometimes, a genuine feeling of fulfillment.
Going back to the question itself, well, the straight-forward and instinctive answer is: playing with my kids, alone time with Mathilde, deep discussions with people -sometimes animated but not necessarily, building stuff -which might imply deep and animated talks with my co-founders, exploring outside, skateboarding, boxing, distraction-free reading -good coffee not optional. I could go on for hours. Typical example being: I hate running -the activity itself- but I would 100% put 'running with Mathilde' up there in the list of moments where I feel the happiest. I don't golf but again, I would 100% put all the mornings I spent with my grand-father 20 years ago on a golf court up there in the list. I'm not a foodie but again, well, you get the point.