Im getting older

I get the feeling that i want to be a kid again, the feeling of comfort, reliability, and the ability to not worry or planning on doing something or the need of accomplishing something. That feeling became very nostalgic, and i get it now, life is a becoming more of accomplishing tasks like, doing this, doing that, need this, need that and etc. for me its hard to experience the same feeling i had when i was a kid, and its very sentimental for me because i remember very much of it. It worries me that as i get older im entitled to do tasks mindlessly and preparing for the worst every time.