Dear J.:
You sound very conscientious and obviously truely want what is best for your children.
As parents we are the primary educators of our children. In the role of an educator sometimes we must be a doctor, sometime a gardener, sometimes a mentor. Doctors must first diagnose the disease in order to find the correct remedy.
Children misbehave for many reasons. If however, the parents and guardians of the child predetermine that the misbehavior is because of "nothing" they will not find the reason and therefore never find an effective solution. Also, at the beginning of things it is always important to look to the end. This helps us determine what will truely be effective action both in short and LONG term. If we desire our children to be able to handle difficulties without resorting to violence--"a little thump" probably isn't the best bet. Discipline is necessary but often what we have learned and define as discipline, even if it may seem mild in comparison to what we went through does not encourage true self discipline in our children. Have you ever hear of the book, "The Family Virtues Guide: Simple Ways to Bring Out the Best in Our Children and Ourselves" by Linda Kavelin Popov with Dan Popov, Ph.D and John Kavelin? It is Fantastic! It is part of the Virtues Project and is published by Plume publishing (I think Plume is a section of Penguin.) Anyway, it is a wonderful practicle assistant that can be used throughout child raising and better yet, its techniques have been proven effective in extremely diverse situations.
A huge key to effectively raising children is to first see their true reality. Even when a child is misbehaving, that child is first and foremost a spiritual being. Our job is to assist the child to train her to allow her physical and emotional aspects to serve her spiritual side. While letting a child know that certain behavior is unacceptable is important, it only goes part way; we must help her know not what is acceptable. The more we speak the language of virtues, the more a child is able to determine what virtues are helpful to them under what conditions. What would happen if the next time your daughter threw herself on the floor you sincerely said, "Your ability to through yourself on the floor when you choose shows a great deal of discipline and control over your body. But I am concerned for you because it is a hurtful thing to do so I am wondering if you are feeling more hurt by something else?" If you have already discussed her hurts, then perhaps after pointing out her strengths of discipline and control you could point out that patience would be helpful in this situation and tell her what patience looks like and how confident you are that she can practice it. Later you can even give her two virtues and ask her which one she thinks would be most helpful in the situation. Whatever the virtue that is most needed at the time, you can point to it. I am sure you get the idea. Whether it is patience or another virtue, the process can be applied. Of course a key component is the acknowledgement whenever you see even a little bit of that virtue being practiced. The virtues in children are as in the state of seeds, the more they are encouraged to grow, the more they will. And they must be encouraged and allowed to develope under different conditions. As mentors, we must remember, that the more children see us conveying love(not indulgence, but real love)and joy and patience and honesty, etc. to and around them, the more they will reflect these qualities because that is their reality and they truely strive to model themselves after their parents. Of course, if they sense impatience and frustration on the part of their parent and they then receive a hurt from the parent, they will reflect this behavior as well. (The impatience and hurt etc. may be directed toward herself and/or directd to others)
Another thing that is helpful is a good understanding of what is appropriate at different stages of growth. For example, in order to grow in a healthy manner a child of two must assert a different level of independence than an infant. If a child is prevented from doing this children become dependant, insecure, unable to set appropriate boundaries and easily manipulated later in life. Instead of wishing your daughter could go back to being like she was before, it may be a more healthy approach to desire that she can fulfill all her potentiality! When we keep in mind that God's creation is good and that He created a process of development and stages of growth, we can look to find the good and the opportunity for growth in every event. This allows us to be much less anxious, less concerned with what we think others might think and truely focused on Divine Reality. When we see the "image of God" (spiritual reality) in our children, our children become more joyful and so do we we. Also, in viewing their spiritual reality our life experience can then assist them to develope in positive ways rather than negative. Much Love, Light, and Joy, J. H.