:wa:
Alhamdulilah, Allah SWT has blessed you with a child and instilled a parents love into your heart for him/her.
At 4 years old, your child is still developing as an individual, in character and personality. Once he/she begins primary education and begins to make friends, inshallah you will see a visible difference in him/her. Exposure to such a environment will help build your childs confidence.
There is a very good Islamic parenting website that will assist you, inshallah. It also has duas which may be of assistance.
http://islam4parents.com/free-printa...supplications/
And remember, Allah SWT will hear your prayer - in whatever language, whatever form.
May Allah SWT grant your family a prosperous life on strong eeman and bless your child with confidence, honour, piety, strength, good character and may your child be a blessing for you. Ameen.