missing my childhood at just 20

Yes I'm 20 , freshly graduated and applying for jobs in this " not gonna happen honey " economy, even tho I was myself and kid just few years ago , whenever I see kids in uniform i gets this feeling I don't know if it's envy or nostalgia ( i hate getting nostalgic over things makes me feel old ) but I'm trying to remember that I have my whole life ahead of me and I'm gonna make more memories that will turn into nostalgia ( which sucks ) I been watching my favourite childhood movies to cope but really somehow they got better ,better than Interstellar which i pretend to like .i know deep down i need to grow up and I will suck it up and grow with time cause that's what adults do .