If you are new to Parenting a child with behaviour issues, you really should try charts, break them down into mornings and afternoons, with small awards of recognition, then a bigger prize at the end of the week. Make it something you think is within reach at first, then increase the expectations slowly, to allow their confidence to grow along with the work.
with some children it wont work, but it does work for most, and dont give up at first, keep plugging.
If you have one of those where charting doesnt work, someone who is low in confidence, oppositional, or unstable in any way, just make very clear rules, and have very clear consequenses, good choices bring good consequenses, and bad choices bring bad consequenses, I know it sounds simple, but try implementing it, . a tantrum is not acceptable, and will have a consequense, if you have a child with tantrums or rages, best to let them,finish their rage, then state the natural consequense, and allow, for some upset feelings, try to zip it, say nothing, but under no sircumstance can they get out of the circumstance. The trick is to let them process, without feeding in your own dissappointments. allow them to be upset, and be calm.