You can start by exploring your interests, skills, and values, and researching different careers that align with them. You can also speak to career counselors, take personality tests, and get hands-on experience through internships or part-time jobs to help you determine your ideal career path.

You can prepare for a job interview by researching the company and the job position, practicing common interview questions, dressing professionally, and preparing answers that highlight your qualifications and skills.

You can negotiate your salary by preparing and researching the market rate for the job, understanding your own worth and what you bring to the table, and having a clear understanding of your expectations and needs. It's important to approach salary negotiations in a professional and respectful manner.

You can handle a difficult boss or coworker by staying professional, focusing on solutions instead of problems, and communicating effectively. If necessary, you can also seek help from human resources or a supervisor.

You can advance in your career by setting clear goals, developing new skills, networking, seeking feedback and mentorship, and being open to new opportunities and challenges.