Depending on the context, domain, and purpose of problem solving, you can select metrics that fulfill your needs and goals. For instance, when it comes to personal development, you can measure growth and improvement using metrics such as the number of new skills, habits, or mindsets acquired, the amount of self-confidence, motivation, or happiness gained, or the level of difficulty, complexity, or novelty handled. When it comes to career advancement, you can measure success and recognition through metrics such as the number of projects, tasks, or roles completed, the amount of money, rewards or promotions earned, or the degree of influence, reputation or leadership built. Finally, when it comes to social impact, you can measure contribution and value to society and the environment by using metrics such as the number of people helped, the amount of change generated or the scale of awareness created.