How can I stay awake for a long period of time?

Well, last night I planned on getting a normal, good night’s sleep. However, I found myself still lying awake in my bed at 5:30 in the morning and the sun was up. So I decided to get up and now I am trying to stay awake atleast until 2 pm, because I am hanging out with a friend around then, currently it is almost 8 am.