“Every plan we make is dead by Thursday.”
Plans fail at the start line, not the finish line. The habit was too big, or there were five of them, or it was secretly your habit wearing their name. This section builds one habit, sized to actually start, connected out loud to the goal your teen named.
And the goal is allowed to be about the game. The machinery your teen learns here, pick a target, shrink the step, hold on through the boring part, runs the same on a rank as it does on a grade. The skill transfers. The topic doesn’t have to.