Some examples of some brief Irish blessings are, "May the road rise to you," "Health and long life to you" and Life is like a cup of tea; its all in how you make it." Along more whimsical lines, there's "If you're lucky enough to be Irish, you're lucky enough!"
There are a multitude of Irish blessings, both long and short, which can vary slightly from one source to the next. They have no official origins and most are not attributable to any specific person. The most common use for Irish blessings is for toasts at weddings or other gatherings.