Some people thrive on routine while routines bore other people. Whatever your inclinations are, setting minimal routines will help you cope with times of stress when everything may be chaotic.
Set simple routines starting from the morning. Set times for waking up at a particular time and the morning rituals that you engage in.
Set times for bed time, meals, exercise and relaxing activities.
Having time chunks to do academic work and leisure activities will set the mind on a clockwork and will give us less time to dwell on possible negativity of a situation.
You can maximize productivity by identifying energy peaks and dips during the day.
Use the times of the day when energy is high. Work as 90 minute chunks for maximum productivity. You can meditate just before a session of work and do light stretches to end it.
Routine will help you formalize your time and help you maximize productivity.