From MLB Power Pros Wiki

Description

Motivation is a status in Success Mode. It is indicated by a face icon, similar to that of condition on the main screen, and can be influenced by both Key and Random Events as well as dating.

Motivation Effects

• Motivation heading into a game will determine the player's condition in it.
• In Success Mode 2007, Motivation affects the amount of vitality lost in training.
• In Success Mode 2008, Motivation affects the amount of vitality lost in training, as well as experience points gained from training.