Although the title is Miscellaneous, the chapter really is a repetition about the dichotomy of control as well as being kind to all; having a kindred feeling for all - bringing all into your circle of love.
If you regard "things in your control" as the ultimate good, then you will be in control of your mental resiliency. But if you view "things not in your control" as the ultimate good, then you will have envy and uncontrolled desires; you'll have a troubled mind, you'll grieve, lament and be unhappy (see v. 1-3, p. 165).
Have a kindred feeling for all. For strangers, because they too are the offspring of Zeus or the Universe or God. Honor your father and mother, since you came from them. Honor your brothers and sisters, since you and they share a common heritage. Zeus or God oversees all (see v. 4-5, p. 165).
Similar commentary on this subject can be found on Meditations 4:4.