i am afraid if my study permit delays what i will do

its really hard to be patience in this anxiety. I have so many positive points in my study visa application but one negative point give me stress which is, i already completed master in occupational health and safety from Turin University Italy in 2016 and after that i continued my job in dubai since 4 year, Visa officer may point on that if i already did master degree then why i going canada for one year certificate in a college. I explained very well in LOE but yes it is weak point, age i guess not an issue, i am 37 and half. Positive points are i went Italy for study and came back before visa expiry, 6 month salary credited in bank statement i uploaded, 70% advance fees paid to college, strong ties in dubai as i working here since years, house tenancy contract, bills etc attached but still i am in fear