habit

I have never smoke before. I have a weak body, so when I was young, doctors said I should not smoke. FOR THIS REASON, I HAVE NEVER SMOKED BEFORE.  And I hate the smell that people smoke. I think it is IN my best choice AND INTEREST that I don't smoke.  IN FACT, I HATE THE SMELL OF SMOKED TOBACCO.  But I DO have a bad habit. I often shake my feet when I am sitting on the chair. Other people don't like that, because they IT IS  DISTRACTING, AND THEY can't focus ON their own work. I HAVE tried to change this habit, However, BUT EVEN after 2 or 3 years later, I am still CONTINUE shaking my feet unconsciously. I VERY MUCH REGRET THIS BOTHERS OTHERS, AND SO I'M WORKING ON RIDDING MYSELF OF THIS BAD HABIT BY THE END OF THE YEAR.  am very sorry to other people about that. I should be going to throw the bad habit away until this year.