For many people, personal fit can mean the best way of contributing is through donations: you work in a career you love and excel at, and even if the work itself is not hugely impactful, you can make an enormous difference with your giving. This was true of John Yan. After learning about effective altruism and thinking about his career options, he decided to continue as a software engineer and donate a significant fraction of his income to effective charities as a member of Giving What We Can.