If a quit smoking will a breath Better ive been smoking for a year if i quit will everything go to normal.? -
Yes.
Not immediately, though. If you have been smoking for a year, it will take several months for you to return to normal.
But quitting after a year is better than quitting after 10 years! YOU have a chance of getting back to normal. But after 10years (or even just 5) some damage is permanent, and you will never heal.
GIVE IT UP NOW, while you are still almost healthy.