**Aim for a calm voice, a short instruction, and predictable follow-through.** At four, a child can understand a rule and still struggle to stop himself when he really wants something. More explaining in that moment often won’t help.

It’s exhausting when shouting seems to be the only thing that works. But stopping when frightened isn’t the same as learning self-control. Physical punishment and yelling are ineffective long-term discipline strategies; the American Academy of Pediatrics recommends clear limits, redirection, and positive reinforcement. [AAP guidance](https://www.healthychildren.org/English/family-life/family-dynamics/communication-discipline/Pages/Disciplining-Your-Child.aspx)

For the toy-grabbing example, try this sequence:

1. **Get close and stop the grabbing.** Gently block his hand if necessary to protect his brother. Say, “I won’t let you take it. He’s using it.”
2. **Give one concrete direction:** “Give the truck back.” Avoid a long explanation or asking “Will you give it back?” when it isn’t optional.
3. **Follow through.** If he doesn’t return it after a brief opportunity, calmly help return it. If he keeps grabbing, separate their play for now: “You’re having trouble leaving his toy alone. We’ll play over here.”
4. **Acknowledge the feeling while keeping the limit:** “You really want that truck. It’s hard to wait. You can ask for a turn or choose another toy.” He can be upset; the toy still goes back.
5. **Notice the behavior you want:** “You waited until he finished—that was helpful.” Practise asking and taking turns later, when he’s calm.

Clear, age-appropriate directions and immediate, related consequences are consistent with [CDC parenting guidance](https://www.cdc.gov/parenting-toddlers/directions/good-directions.html). Your calm words become meaningful because you consistently act on them.

To help yourself stay calm, decide on your sentence beforehand: **“I can be firm without being loud.”** Take one slow breath, lower your voice, and use fewer words. You don’t have to feel perfectly calm to respond calmly. If you’re close to hitting him, put both children somewhere safe and take a brief pause, or have another adult take over. The [AAP also recommends taking a parent time-out](https://www.healthychildren.org/English/family-life/family-dynamics/communication-discipline/Pages/Disciplining-Your-Child.aspx).

Outside conflicts, give him regular individual attention, watch for tiredness and hunger, and praise small instances of cooperation. Offer choices before trouble starts rather than negotiating a reward each time he grabs something.

**Success doesn’t mean he agrees or stops crying; it means the limit holds without anyone being hurt.** Expect repetition. If aggression is frequent, causes injuries, or you’re regularly struggling to avoid physical punishment, ask his pediatrician for help and parent coaching. [AAP guidance on aggression](https://www.healthychildren.org/English/ages-stages/toddler/pages/Aggressive-Behavior.aspx)