The document discusses avoiding "lock in", which refers to an arrangement where a person or company is obligated to only deal with a specific other company. It provides examples of lock in and discusses why companies use lock in strategies. It suggests considering whether and how locked in you are currently, and provides tips for preventing lock in, such as having an exit strategy, constantly updating your resume and skills, building a network, and planning your career goals and paths. It emphasizes having a plan to avoid being stuck without options.