If any profession that can be considered emotionally difficult then probably being a Child Custody Attorney is the one, obviously after those dealing with physically and mentally challenged patients. It is not always that this profession would welcome you with unpleasant cases; there are times when you would be proud to select this as a career.
Pride for the profession especially comes when you are fighting a case where the child has been physically abused by the other parent. Then it is legal and morally correct to separate the child from such a parent who is hampering the natural growth of the child. It is a tough battle but it needs to be won. If you are going to a lawyer with such a case, then go prepared with proof and pieces of evidence. These can help you fight the case and win it too.
It is good if you can visit a Child Custody Counsel, as the attorney would be able to explain the legal issues. They even know about the different types of custody like legal custody, joint custody, primary custody or single or sole parent custody. Now each gives a parent separate rights and is approved by the court of law.
If a parent is awarded sole custody, then it means it has complete control of the child and would decide about the future of the child and give the child the rightful childhood. This cannot be reversed unless and until another parent is able to prove that a child is not given an appropriate childhood.