Bad Programming Habits

1. can’t focus on one language
2. don’t have fundamentals clear
3. think you know everything
4. don’t utilize the resources
5. ignore errors
6. don’t know how to optimize the code
7. refuse to ask for help
8. freeze under pressure
9. don’t write enough comments
10. can’t accept new technologies
11. copy code from online
12. don’t plan before implementing
13. count hours
14. over engineer simple problems
15. ignore suggestion of others
16. don’t practice much
17. give up too soon
18. don’t use social media
19. don’t interact with programming community
20. don’t keep project manager updated
21. are not clear about what you’re doing

see more here with detail