Keeping yourself cheerful is important to increase concentration in studies and to do well in exams. Since you study in Lahore University, visiting Badshahi Masjid is easy for you. Hope you can visit that place next Saturday or Sunday with your brother. You visited this historical place long ago and enjoyed it, I don't think this time will be different. Glad to know that there are cheap hotels available for those traveling to this place from other cities. Thank you for letting us know about this place. Good luck