I started making glass about ten years ago setting aside a large chunk of time to make and break glass. The first year was great. In fact, most of my favorite pieces were fresh in concept, intricate, and remain my favorites. I worked at the process eight hours a day and learned a lot.
Then suddenly everything broke down. Every piece I made cracked because it had thermal stress. I would be upstairs and suddenly I could hear a ping. I ran downstairs and my latest treasure (three months after I made it) split down the center. It nearly broke my heart. But I am stubborn. I called and emailed anybody I could and finally figured out I should ignore the advice of the manufacturer of my kiln and slow everything way down.
Now I get to “refuse”; I cut little pieces out of the broken glass and rearrange it and it becomes even more intricate than when I started the project. I have programmed my computer control on the kiln to let it go through a process for a long time—like 13 hours, then never open the lid until 24 hours. That rewards my obsessive behavior, but “better safe than sorry”.