People on here won't like this but stop smoking while you still can.. It doesn't help you in the long run. And your speech, motor coordination and mental health problems will only get worse. I could go on and on about bad side effects but that'll do for now.
If you must smoke then only do it lightly on a Fri and Sat night. You will still feel a bit sluggish and brain fried on Monday though.
Abuse of any drug will fuck you up in the end.