[hitsurume]

You're basically asking people "What is my purpose?" and really no one here can tell you what you should be doing. Deep work is an art form of eliminating distractions and concentrating on the specific task at hand for a period of several hours uninterrupted. Whether its "work on a research paper" or "write a novel" or "learn a new programming language", these tasks are ultimately up to you to figure out what you should be doing.