The personal care services, fitness, and education fields are a good fit for students who enjoy providing individualized attention to others' needs. While many of these careers require certification, on-the-job training is often available. For more experienced and motivated workers, some of these careers even have the potential for self-employment. Great Careers with a High School Diploma: Personal Care Services, Fitness, and Education includes 10 careers in these lucrative fields.Career profiles include: