Hello! Could you please share how you remain childlike innately and keep your “innocence” in a sense?

I (mid-20s) have noticed myself in the past 2 years growing more and more cynical and jaded. Not sure if it is because I am working now or just have more life experience under me, but I really do not like it and miss the naïveté and innocence from my early 20s; there is something a little depressing about all this. I think I was happier in a sense (not that I am unhappy now...just feels a bit different?). I know I cannot go back to where I was before, but if I could somehow cultivate more of a childlike (not childish) mindset or at least delay the cynicism and jadedness, that would be great.

Thank you!