[jfitzpa22]

If I understand your question correctly, then you are looking for ways to hold yourself accountable when doing work for which you are the main stakeholder. Does this mean a side project outside of what you do for a living or does this mean when working solo at your job? If it's the former, then you have at least two options: see the work through or quit and find something that excites you enough to follow the task through to fruition. If it's something that that you are working on solo for your paying job, then perhaps consider keeping to a schedule, asking colleagues that you respect to review your work, and to taking some time at the end of the day to identify why working by yourself produces the observed results. Does some rational (or irrational) belief lead to a dip in quality and goals?