Anxiety is future focused. Regret is of the past. You can't regret anything in the prese. So joy is found in the present. As we train ourselves to live more in the present, we can reclaim some of the happiness of childhood. Another thing that happens is novelty. Adults don't engage in new stuff any more. If you start engaging in new stuff, you can capture a piece of that childhood happiness. Be aware of you're like cynicism in the way that you view life. It tanks your happiness. Andifi meansory childhood is the best years of your life.