Keep tellings off* short and hugs long.
Encorage them always to have a go
Let them take risks, keep 'be carefulls' to the minimum.
Let them see you throw yourself down the water slide, go on the roller coaster.
Listen to them, but cut them short if it's negative winge. Ask them for the possitives of their day. (Don't winge and gossip yourself)
Don't tolerate them being bullied or let them bully others. Encourage them to see their peers good points
Support the activities they enjoy and (except for swimming) don't force the ones they don't.
Have a positive attitude to learning, let them see you learn and try new things. Have hobbies and let them see they are important. If you work let them see the positives.
*Personally I shout and I've been known to smack, I don't think exactly how you discipline matters. What matters is you keep it short. Don't nag, don't bring up past crimes, don't sulk or allow sulking.
Don't take toys, TV or screens away for prolonged periods.
Keep groundings short and don't cancell outings or parties. Don't make threats you can't or feel really rotten carrying out.
Long drawn out punishments don't make DCs think about the crime, they just make them hate you and hate the world.
Feeling justified in pushing blame and resentment on to others is the opposite of self-esteem.
You want them to realise somethings are unacceptable and move on.