Make 2 lists. The first should include items you must have (i.e., the number of bedrooms you need for the size of your family, a one-story house if accessibility is a factor, etc.). The second list is your wishes, things you would like to have (pool, den, etc.) but that are not absolutely necessary. Realistically for first-time buyers, you probably will not get everything on your wish list, but it will keep you on track for what you are looking for.