Meditation 12.6-7

6. Practise even the things which you despair of achieving. For even the left hand, which for other uses is slow from want of practice, has a stronger hold upon the bridle rein than the right; for it has been practised in this.

7. What ought one to be like both in body and soul, when overtaken by death; the brevity of life; the gulf of Time hereafter and gone by; the weakness of all matter.