A buoyant positive approach to the game is as basic as a sound swing.
Using lots of fresh foods fruits and vegetables helps to keep the menu buoyant - I don't know if that's the right word but it keeps a balance of freshness and health.
The best advice my dad ever gave me is that acting is believing. Acting is not acting. It isn't putting on a face and dancing around in a mask. It's believing that you are that character and playing him as if it were a normal day in the life of that character.