Be grateful

How to show your gratitude? Some people do it well while others don't. I am not at the extreme but I think I have room to improve on this. I don't know much on how to react when some one gave me a big favor. I sometimes blame it on my limit knowledge of English. But, is the language the main reason? Probably not. Most likely is because I am the youngest child. Recently many things happened in my life. I received many helps from various people. From the interactions, suddenly I realized that I might have been too pushy. The attitude might be interpreted as ingratitude. So I paused. I looked back. I examined what I have done. Saying "truly appreciated" all the times is not a good idea. But when to say it is. I shall look around, listen to how other people show the gratitude, and practice the good way.