Come up with a list of games that you enjoy that stimulate the left brain more than the right. Analytical puzzle games, language challenges (Scrabble, crossword puzzles), math games (Sudoku), and games that make you remember specific information all stimulate the left side of the brain. Incorporate these games into your day-to-day routine.
Take a break from right brain stimulating activities, such as creative pursuits and long-term planning. If you regularly listen to music or look at art, give yourself some time off from those activities.
Focus on small details, finding logical conclusions and analytical thinking. Try to train yourself to use left brain thinking. Consider problems from an logic-oriented standpoint, and gather extensive information before making any big decisions.
Tune out your emotional, intuitive side in favor of analysis and logic. Lessen your dependence on emotional thinking.