1. Assuming that you know everything
2. Forgetting to network
3. Not being prepared for meetings
4. Ignoring the value of business cards
5. Engaging in office drama
6. Arriving to meetings late
7. Not asking for more work when you’re bored
8. Being satisfied doing the minimum amount of work necessary
9. Not sharing your career goals with your leader
10. Not reading up on your industry
11. Forgetting to make a LinkedIn page
12. Over-sharing personal stories at work
13. Burning bridges when leaving a job
14. Dressing unprofessionally
15. Not proof-reading your e-mails
16. Believing that you’re going to be a VP right out of college
17. Not seeing the value in entry-level positions
18. Not learning from your mistakes and failures
19. Failing to seek out a mentor
20. Thinking that once you choose a job field, you’re stuck with it forever
21. Not having an updated resume available at all times
22. Failing to join associations and groups pertaining to your industry
23. Being a negative person
24. Not taking initiative and turning down all new projects
25. Forgetting to thank people who help you
26. Not asking for help when you need it
27. Failing to admit that you’re overwhelmed with your workload
28. Trying to convince yourself that you love your job when you don’t
29. Overestimating your abilities and not being honest about them
30. Turning down training courses
31. Not keeping track of all your accomplishments
32. Making career decisions for anyone other than yourself
33. Not actively looking for a job when you’re not happy with the one you have
34. Thinking that it’s too late in life to change careers
35. Making premature judgements of others
36. Over-promising results, and then failing to deliver
37. Not having a system for managing e-mails
38. Failing to understand when and how you’re most productive
39. Assuming that everyone around you thinks the same way you do
40. Failing to accept diversity as an asset to your team
41. Not caring how your actions affect other people
42. Having an emotional IQ of zero
43. Being scared to ask questions
44. Making decisions that impact others without consulting with them first
45. Believing that you need to be an a-hole to be taken seriously
46. Taking jobs just for the money
47. Not sharing your knowledge with others
48. Letting your ego guide your decisions
49. Not thinking big-picture
50. Complaining about problems instead of offering solutions
51. Failing to embrace change
52. Being intimidated by new technology
53. Not pushing yourself outside of your comfort zone
54. Not giving yourself time to re-charge
55. Not standing up for what you’re worth
