Don't sleep late or watch daytime TV during work time. It's tempting sometimes, but successful businesses are built on the days that you don't feel like it, not on the days that you do feel like it. Wear your work uniform when you are working. It made me feel more like I was supposed to be working. Work on high value tasks during your peak productive hours.
Most people have specific part of the day that they are more productive.
I find my optimum schedule is to start about one hour after sunrise, work continuously for four hours, then go out. I can work another two hours after I return. That six hour work schedule has consistently produced more work product than I used to produce in two days in the corporate environment. Accomplish your Single Daily Action before you finish the workday. Have a Single Daily Action every day which is the most important action for that day.