wish can go back in time

seriously..i really want to go back in time..if just i have the machine..i really want to go back in time..go back in time that me and my friends are still caring each others..honestly..i don't really think this is the time that i can happy like before..deep down i really hurt so bad :(...i just really want it..JUST ONCE..they say,what's wrong with you??but they never ask me that question..the point is..it's hurt so badly