Daily Routine
Be disciplined. It is important to cultivate strict routines or working hours, but also be kind to yourself. Wake up at your usual time and go through your usual routine. For me, I use the time usually spent on commuting to read or stretch my legs.
Dress properly. Do not wear pajamas. The way you dress can influence your mood and attitude, so dress in proper work attire.
Set work hours. Working from home allows for flexibility, but the start and end of your work day should be as routine as possible. Enforce a hard stop at the end of the day, and plan for personal errands after that. Setting a target end time will dictate expectations and increase productivity.
Create a good routine with short exercise breaks. I personally feel that moving and stretching my body energises the brain. The truth is, endorphins are produced when exercising, which increases happiness and interest levels.