In answer to your question, if possible I would break away from the thing that frustrates me, at least for a while.

At the same time I would work on a few tasks that can easily be accomplished but which, coming in a streak, would boost my mood, so that the next time I have to deal with the frustrating problem (if it doesn't go away "by itself"), it won't feel as frustrating any more, or I will come up with a solution easier.