One of the fundamental principles of personal finance is creating and sticking to a budget. A budget is a financial plan that outlines an individual's income, expenses, and savings goals. By creating a budget and tracking their spending, individuals can gain better control over their finances and identify areas where they can cut costs and save money. Biotechnology One of the fundamental principles of personal finance is creating and sticking to a budget. A budget is a financial plan that outlines an individual's income, expenses, and savings goals. By creating a budget and tracking their spending, individuals can gain better control over their finances and identify areas where they can cut costs and save money.