N.K.
My daughter who i now 2 had a sharing problem for a little but it passed. We hang around kids that do and I believe that every child is different. However, I always preached(in a fun way) before we did anything out in public where their would be kids or at anybody's house to remember to share because its nice and that way you'll get to see and play with more toys and meet new friends. I had an Elmo book and Nick Jr. Yo Gabba Gabba video about sharing and that really worked. The main thing is is that youo HAVE to be so consistent on this issue like every other. Good Luck