This is a very legitimate concern. As dentists, we always want what's best for our patients and we strive to give you helpful tips and suggestions. At the same time, we understand that patients would like to continue with their daily routines and have the foods and drinks they enjoy. My general rule to thumb is to limit foods and liquids that would stain a white shirt, ie red wine, ketchup, hot sauce, blueberries, etc and if you are a coffee drinker, have iced coffee through a straw as opposed to hot. I would avoid whitening toothpastes and many others that are abrasive. These toothpastes actually scratch the surfaces of the material, which in turn make it dull and more susceptible to stains. I would also suggest to limit or avoid acidic foods and liquids, such as club soda, colas, lemons, sports drinks, etc and consult with your primary care physician to verify that you do not have acid reflux or acid indigestion. Acid introduced into the mouth and on the teeth can hinder the surface of not only your bonding, but more importantly the underlying tooth - the enamel and dentin. If there is presence of acid, coffee, red wine, etc, do not brush your teeth immediately, contrary to what you may think. Wait 1 hour, rinse with water and then brush gently with an extra soft toothbrush with a light/smooth toothpaste. I generally recommend Sensodyne Pronamel because it is one of the least abrasive toothpastes available. If you decide to replace your bonding, this can be done with new composite bonding or porcelain. My recommendation for a composite material is for your dentist to select a high-quality manufacturer, one that has good color stability and excellent polishability that will maintain its original color over a longer time period. It is always important to do diligent research on products and materials since there are so many, in order to provide patients with the best possible results. Veneers are more costly, but if you decide to go in that direction, I would recommend to have your dentist work with an excellent laboratory technician and to provide a pre-diagnostic waxup prototype to visualize the end result prior to treatment. Hope this helps, good luck!