100% commiserate and applaud you noticing, not everyone does. I've had the same demise, overcoming takes practice. As adults I feel like societal pressures cause us to feel like we need to be more 'dignified' (read less fun).

Something that helps me is to just do something small that's fun and pretend like nobody's watching. It's particularly uncomfortable at first but in the end why should someone care if I hopscotch across a crosswalk? It exercises your game-y-ness and gets easier over time. Best of luck in your quest.