Look after your body

'Sharpening the Saw' is an old saying referring to the stupidity of continuing to try to cut down a tree with a blunt saw because you are too busy to sharpen it !! In this case you are sharpening YOUR MIND
Get enough sleep.
Unfortunately there is no proven way to decrease your need for it and there is no evidence that you can 'sleep learn', though it IS thought that your brain is consolidating information sometimes when you are dreaming. Average people need around 8 hours per day If you do not sleep well enough, you will not learn as well.

Do moderate exercise.
Most authorities say that you should be doing a minimum of 20 mins of aerobic exercise 3 times per week.
REMEMBER THAT 10 MINUTES OF EXERCISE PER DAY IS WORTHWHILE. THE KEY IS TO DO SOMETHING.

Eat healthy meals (adequate mix of foods incl. enough fibre), don't smoke and drink in moderation.

Do the simple things - brush, floss.

Spend quality time with those you value in your life.

Regularly remind yourself of why you like who you are and what you stand for.