Enchiridion 3 brings to point how do we manage our feelings. Are we being realistic about things even outside of our control. Is there a level of attachment to externals that may be unhealthy. Things can be useful but we must be realistic like with money.
We must not make assumptions or have unrealistic expectations or face disappointment in life. Set small goals that can be built on. Have gratitude for what you have but understand things in life can be lost.
We get to fond of things and grieve what they are lost. Appreciate the people you have in life. Things can change that affect those and ourselves. We can lose those we love but remember that we also go on living. We have to be rational about things.
Rational thinking is using relevant information, including data, judgments, and facts, to analyze a situation and determine a sound conclusion. In many ways, rational thought could be considered to be the opposite of emotional thinking, which generally involves doing what “feels” best rather than what will lead to the best outcome.
Rational thoughts are logically structured, considering established facts as well as pertinent personal information. Being rational requires the use of reason rather than solely emotion to come to conclusions that are in line with your own values and needs but also take into account the broader knowledge of the world.
It is important to realize that, no matter how hard you may wish it, it is not possible to completely remove all emotion or personal bias from any thinking process. We are emotional, naturally biased humans who are influenced by our past mistakes and experiences.