Nothing can be change

There is always a question in my mind, can i go back to the past? oh no..impossible.. the time wont stop for me even in second. Something that i regret to do. I dont have chance for it.='( , say bye bye >< to the marks... aiz.. recently just felt in sick, sore throat , diarrhea, gastric..=.= Hope i can be strong and healthy enough for the future..><