You might be asking yourself, why would I want to whiten my teeth? The question you should be asking yourself is 'Are You Happy With Your Teeth?' If the answer is yes, then you wouldn't be reading this article.
If the answer is no, then you need to make yourself happy with your teeth as soon as possible.
How did you teeth get in such a state? I'm sure that you clean your teeth regularly, but cleaning them didn't make them stained and dis-coloured in the first place, did they? The abuse of the liquids and substances like smoking and tobacco have made your teeth look the way they are.
No amount of cleaning with regular toothpaste is going to fix that as the ingredients inside these liquids and different substances stain your teeth over time.
You are not going to brush your teeth every time you have a cup of tea or coffee.
Likewise with smoking, even though you might chew gum to mask the smell of the smoke on your breath, you are not necessarily going to run to the bathroom with your toothbrush in hand to brush your teeth.
I am not going to point out the obvious things that you need to do to reduce the amount of stains on your teeth, but I will point you in the direction on how you can get your teeth into a state that you will be acceptable with and be happy with.
If there is one thing that you need in life, and that is that you need to feel confident in yourself and having a great smile with great looking teeth is a start!