Yep, I agree with most all the posts above. Time is going to be the biggest key. The only way I can think of to make the time shorter is if you or your manager or his/her boss can create some sort of personal benefit for the individuals who start to incorporate parts of the "library" into their code.
in reply to code-sharing at work.
Examples off the top of my head are
After about 3 of these, there should be enough momentum toward change that the rewards can decrease/cease.
- Cash for each library used within a certain time frame
- Lunch out for those who've migrated to using x modules at the end of a month
- Golf day