Shakespeare made iambic pentameter into a household word, but many writers still dread the idea of writing it. There's no reason to worry - meter occurs naturally in languages such as English and German, and it's an integral component of literature in these languages. Here are some tips to help you feel Unstressed Over Meter.
What the heck is meter? Why is it important? Where does it even come from?
Wikipedia provides a very thorough description of meter, covering everything from the origins of meter in literature to the various metrical feet. Highly recommended link for both technical information and subject interest.