Maintaining nails healthy and good looking is not so difficult. While it is true that sometimes hereditary factors play part for having good or bad nails and even if you try, you can't change the shape and the size or your nail beds, there are many other simple procedures, which can deliver great results. For instance, the following rules are very basic, yet powerful:

Eat healthy and balanced food.

Carefully choose nail polishes, hardeners and cleaners.

Moisturize your nails.

Use nail oils.

Don't cut your own cuticles.

Get a professional manicure's and pedicure's.   A professional is trained to detect any nail disorders or conditions.