The best way to deal with tantrums is to avoid them when possible. Try using these tips: try to give toddlers “some” control over things, such as when they will brush their teeth or the flavor of their juice; keep off-limit objects out of their sight and reach; distract your child when possible; choose your battles and accommodate them when you can. Even negative attention is better than no attention at all to a child, so make sure you're attending to the behaviors you want to encourage.
I would definitely recommend The Family Tree to parents who need support. They helped us a lot to become better parents.
~ Ray and Amy, Parenting Training Programs participants