Choosing to take on the development of a JSR (JSR-310, Date and Time API) wasn't an easy decision. I knew at the start that it would involve a lot of effort.
My original plan was to work on the JSR solely in my free time (evenings and weekends), but after 4 months the reality was that I hadn't got enough done. So thats why, starting today, I'm taking unpaid leave two days a week from my day-job for 3 months to try and get the task done.
So, I guess that this post should serve as a warning to anyone thinking of starting a JSR. Its going to cost you :-)
PS. JSR-310 is run in a fully open manner, so if you've got something to contribute to the debate, please join the mailing list or add to the wiki!