Be aware that tasks will often take more or less time than expected. Don’t beat yourself up over this, and don’t let it throw your whole plan out of whack. If something doesn’t go as planned, just do your best to adjust your schedule and move on with your work.
If there are tasks you have been meaning to do for a long time and never get done, don’t let them hang over your head forever. Set yourself a deadline or pick a day to do them—or else decide that you can get by okay without them.
Consider keeping a journal to jot down what worked and what didn’t work at the end of each day.
Avoid heavy meals that are going to make you sluggish and want to nap. Digestion takes energy, and processing a large, greasy meal will sap your strength and focus.