My dd is 3yrs 8 months and seems to have low confidence in some situations, especially with other kids. For example today I took her to a party for a child at nursery and she spent most of the first hour clinging to me, coming up with lots of reasons to do things with me, was whining, got upset several times over nothing in particular and had to be constantly encouraged to go off and play with her friends. Towards the end of the party she got a bit more confident about playing with the other kids but she seemed to struggle to join in or know what to do if one of the girls she was playing with got distracted or went off to do something else.
Partly I think she was disappointed that her best friend from nursery wasn't there and she thought she would be. Her best friend (and alot of the other kids) seem to be much more confident in such social situations. Although she isn't friends with every single child at the party, she certainly plays with 3-4 of them when at nursery. When some of them were trying to get her to play she would turn away from them and not speak and she often does this, both with people she does and doesn't know.
She is much more confident with adults, both those she does know, e.g. close family and friends, and with those she doesn't, e.g. other friends that we don't see so often.
She's still young so I don't know if I'm worrying unduly or if there are things I can do to help her become more confident? I'm not the most confident person myself (although dh is) and don't want her to be like me (who finds it hard to talk to people I don't know) but I also get so frustrated when she is like she was today and don't know how to help her or what to do.