it does get harder and it also gets easier in about 2 weeks, you will go through Withdraws and anger .. because i quit smoking last year in march and its nearly been a hole year and i'm still thinking about cigarettes... it takes a very long time before it gets out of your system completely, i see my mum smoking and i kinda get pissed off because i can smell it a mile away and it makes me want one but luckily i dont lol