Software programming/Art and Buddhist Practice - Pursuing creative activity

I have read this question but I'm seeking more advice. So it is quite obvious in the activity of software programming that we cannot help but think about programming concepts and also end up creating objects as concepts (as in Object Oriented Programming) and make something work. Now, I understand their usefulness in the context of what I am working on. Invariably, I get flustered and frustrated sometimes when something doesn't work because I am lost in the process of creation of that thing which I am currently working on, the cause being I am not mindful. Because mindfulness means there is an observer observing the mind and thoughts, which may lead to emotions. But in this activity the mind is busy creating things which would work on a system. Also, sometimes work is incomplete, and you do get an urge to work on something but also you could spend the time to do samatha or vipassana. How to decide efficiently in these cases? How to balance mindfulness, be equanimous and pursue this kind of creative activity at the same time? Or is this a curse that you cannot do it effectively in the process of creativity? I would like to know if someone dealt with this and how? Thank you.