I been in school since 06, crap happens bro. I have had class with 40 year olds. What you do is the same thing we do in the gym. Check your ego at the door, and accomplish what you are there to do. 4 years seems like hell, and like forever right now. But trust me, 2 years in you will be amazed its halfway over.
What are your interests? What would you go back to school for, and where are you at?