Charlie Munger:

If you want to be a strong person

You must undergo extraordinary training within three to five years

Train your humanity, train your courage

Train your spirit, train your skills

Take the best hour of your day to enhance your thinking

Then allocate the remaining time to mundane matters

In this hour, through extensive reading

Make friends with those great individuals who transcend time and space

These exercises will impact your destiny for a lifetime

Never be complacent, not even for a moment.