What are the biggest career mistakes to avoid?

staying in the same job as a 35-year old, just because a 17-year old self decided to pursue a particular course.
Believing that you cannot get a job outside of the realm of subjects you studied.
Not leaving the work behind when leaving the office. Going through the events of the day, and being concerned about what tomorrow will entail.
Being overcommitted to the job. Sacrificing yourself beyond the requirements of time and effort that you are paid for.
Devoting all the energy at workplace in planning, competing with others, attending needless meetings, trying to excel in everything- even in the tasks that don’t matter.
Coming home drained, not having any energy whatsoever to allocate to anything apart from job-related assignments.
Being anxious about attending meetings. Being anxious about talking to high-ranking officials. Being anxious about pinging someone. Being anxious about going to toilet.
Having a major FOMO. Possessing a want to be present in every meeting. Not realizing that the business would go on just fine without you.
Making the organization more important than yourself.
Being a mental slave to the organization. Feeling guilty of taking an off from office.
Trying to exercise control over others at the workplace. Needing victories over other people for a sense of satisfaction.

12.Multi-tasking. Making yourself incapable of doing one thing at a time, like listening to someone.
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