Nervous.... help....

I have been with my partner just over a year we bought a house together and want to buit our own little family. All great so far. In the end of the month we going to Greece for a mini break, and he has an engagement ring in his car. He was never shy of suggestions to give me clues that we getting engaged in Greece. But as the time comes closer i am soooo nervous, even though i will definitely say 'yes'. Any of you knew when you were taking tge next step? how did you coupe with the nerves?