Complex sentence: While I was working with the organization, I didn't have much time for writing and editing articles, since my time was spent doing that on a regular basis and needed to just "veg" at the end of the day.
Split into simpler sentences: While I was working with the organization, I didn't have much time for writing and editing articles. Overall, since my time was spent writing on a regular basis, I just needed to "veg" at the end of the day.