Why do some people Quit Smoking go back on the habit

They don't give enought time for themselves to quit smoking for good.

It does take time.

They just have to realize that they are on track to quiting yet they think that it is not working.

Well you're nearly there.

It is the stage everyone goes through before totally committing to the decision. We are humans, we have tendency to rollback to our old habits but in time given the effort you will end up a non-smoker.

Talk yourself out of it: "Tell the demons that want you to smoke to go away and leave you alone."

Also, one should also look at their personal life.
We smoke because something propells us toward it. We smoke because we have a problem and we are stressed out and we get retribution from smoking a cigarette.

Also, look at other factors, fill your time with people you love to be with. Occupy yourself with things you like doing.
Avoid stressfull situations that pull you into it.

When one is trying to quit one needs to void oneself from activities that give rise to tension, anger, hate, anything of negativity.

Hope some of the ideas here help you out.

you are like the seed who is about to pop it's out of the ground. You're nearly there - keep at it - that is atleast 95% of the work already done.

The bottom line is it's all a pschological thing. Control yourself and you will control all your human behaviour.

Goodluck.

John