Your first name of Macdonald has made you practical, systematic, and thorough. This name encourages the expression of leadership and organizational skills, shrewdness, and analytical ability. Being undemonstrative or unaware of the more subtle needs of others can be a source of friction with those close to you, especially if they are more sensitive or crave thoughtful expressions of affection. Friends and associates may detect a lack of feeling and sympathy in their relationship with you. In some ways you are not overly emotional and sympathetic to others and can be shrewd and materialistic. An inclination to be overly cautious and serious could make you pessimistic and lacking in humour. That is your way of helping others through challenging situations. You are mathematically adept and have great patience with work of a detailed nature such as bookkeeping, accounting, or technical research. You have an appetite for rich heavy foods, and a tendency to eat more than the body can process. Your interests and hobbies are generally along practical, technical, or scientific lines.