Tactics first

Teach tactics first when starting with improving someone's chess.

Tactics are the beginning, middle and end.

Tactics are how you achieve a vision that you have for the board.

The most beautiful strategic vision must be rejected if it is tactically unsound.

You must assume a perfect opponent. You cannot play a move hoping he does not see the correct response.

Teach tactics first when improving someone's life.
Tactics are relevant at the beginning, middle and end.
Tactics are how you achieve the vision for your life.
You must reject even the loftiest goals if they are tactically unsound.
You must expect the world to continue functioning as it does presently. You cannot include a lottery win in your plans.