I think it depends on what we call gifts. For example, I have worked very hard for the material items I have such as, my house and car. I have also sacrificed some aspects in my life so that I can have a roof over my head and food on my table, so I don't call those things gifts.
However, having the ability and health to work hard is a gift but, one which I have used in a positive way.
Basically, my point is, some gifts we may be worthy of and some we may not. I think it all comes down to how we use or gifts and share them with others.