Ключевые слова: 40, 40th, ability, achieve, achievement, age, anniversary, attribute, background, baking, birthday, blog, career, celebrate, celebration, contribution, counseling, development, enjoy, enjoyment, ethics, evaluate, evaluation, event, expert, father, forty, goal, happiness, happy, inspiration, inspirational, management, marks, motivation, motivational, number, occupation, perform, performance, philosophy, plan, quotation, quote, responsibility, success, target, wishing, work, years,