Those days when nothing works

Yesterday I had the greatest feeling when I solved som issues. Then it appeared that it was only working on one platform. My feeling of joy was abruptly taken away - and all of today has been one huge hell. After noticing this I started using the hg strip command on my local repository to revert some changes I made that also had broken some other things, and I ended up having to clone again, hence loosing all of my local changes. So today has been a zero day and days like this - were nothing works - feels awful. I just want to solve those issues with style and have them moved over to "done" on the board (before "done" we have "code review" and "test" so the work is not over until it has passed these).