Remember that, on the one hand, desires command you to obtain what you long for, and on the other, aversions command you to avoid what you dislike. Those who fail to gain what they desire are unfortunate, whilst those who fall into what they seek to avoid are miserable. So if you seek to avoid only those things contrary to nature amongst the things that are in your power, you will accordingly fall into nothing to which you are averse; but if you seek to avoid sickness, or death, or poverty, you will be miserable.  Therefore, remove altogether your aversion for anything that is not in our power, and transfer it to those things contrary to nature that are in our power. For the time being, completely restrain your desires, for if you desire any of those things not in our power you are bound to suffer misfortune. For of those things in our power, which it would be proper to desire, none is yet within your grasp. Use only choice and refusal, but use even these lightly, with reservation, and without straining.