If you've placed a child for adoption, or were yourself adopted, and need some support, there are specific counselling services who may be able to assist.
In Queensland, these include:
Post Adoption Support Queensland: this program (run by the Benevolent Society) offers specialist post adoption support, as well as help finding relatives and mediation for those reuniting with family members.
Jigsaw: Jigsaw is a non-profit organisation which offers support groups and information on a range of adoption-related issues, including those affected by forced adoption and donor-conception. Their website also has a list of other support groups around the state.
If you're interstate, your state government's adoption services unit should be able to refer you to counselling or support services for those affected by adoptions. Check out the list here.