10 year old going through puberty? Destructive behaviour

[hiddengems]

My 10 year old DS1 is becoming increasingly destructive when he's unhappy.

He doesn't fly into a rage. It's all quite measured and controlled.

He will break pencils etc, rip up certificates, trophies he's won. This morning he managed to bend his noticeboard in two.

He's actually done this for a long time so I'm not sure why I'm blaming puberty but he's become increasingly emotional.

He's also packed a suitcase and tried to leave the house.

I don't know what to do. Is this his hormones or just bad behaviour.

I'm really conscious that he's nearly a teenager and is more or less stronger than me already. It can't continue.

He is well behaved at school.

If it is puberty, hormones etc, how do you draw the line between being understanding and not allowing him to run riot!

I'm making him pay for everything he breaks but difficult to do when it's a football trophy.

Help!