My Guru repeatedly says that there is no such thing as a perfect type of work.
Even the best of things, done over and over, will only bring boredom and frustration.
Our scriptures also place no emphasis on the actual work we do, but rather only focus on the state of our minds, while we are engaged in that (any) work.
How to work then? My Guru repeats this verse from chapter 18 of the Gita:
mukta-saṅgo ‘nahaṁ-vādī dhṛity-utsāha-samanvitaḥ
It means that one must be free from attachment and ego, and be endowed with dhriti and utsaha, i.e. perseverance and enthusiasm. That is the simple (but not easy) secret sauce to success.