Can't sleep

Hey,it's about 1.20am now,still can't sleep,don't know why,but yea,so today I had an interview,it was part of my assessment for my english class..I was supposed to bring my certs and all,but in the morning,I went to check it,surprisingly I didn't have any,I only have my leaving certificate,weird,where could I have place it?damn,I need my certs..But anyway,the interview went well..Didn't expect my instructor to have that high expectations of me..But I'm glad I got through the interview..There will be another session tomorrow,but I'm gonna sit back and relax,since I'm through..so yea,I need to get some shut eyes,long drive down to KB again..Please sheep,help me sleep..Cheers..