To start again like a child

I’m going to finish my four years college life in this year, but once i review this period of my life, I’m just wondering what actually did I learned from college. Seems I learned nothing from it but wasting of time. It’s at a economic recession right now and getting a job is such a hard task that I could not devote myself on job I’m interested in. But I think I should not be too upset about it, just keep learning and doing things which I am interested in, though it will not be helpful in my job-seeking and further career. Just restart, or start again like a child.