Composure is an absolute necessity to be able to delve into the Torah, and to serve Hashem. This is especially true for us, for whom any small preoccupation is enough to disturb our service of Hashem. It is therefore correct and fitting for a person to search for composure and calmness, and to flee from any form of preoccupation, such as investing his money or other business worries. It is better to have dry bread and peace rather than preoccupation, pain and worry the whole time.
If he has a necessary occupation, he should make sure to perform it quickly and promptly in order to empty his mind from this preoccupation. It is also good for a person that when he wants to remember something, be it in holy things or secular things, that he should immediately write it down, so that he is not preoccupied to remember it.
Although ideally a person should leave his sustenance to Hashem, and still be composed when learning or praying even if he has more disturbances and difficulties than Iyov had, to the extent that nothing can disturb him, but “Who is a man who is capable of doing this or the son of man who can take hold of it?”. If only we would be able to serve our Creator in a complete fashion when we are not preoccupied at all. The evil inclination mixes us up and disturbs us with strange thoughts and time wasting, and when we have even a small preoccupation we are like drunkards and our service is disturbed, so that we are unable to concentrate. It is therefore an obligation on us to minimize our disturbances as much as possible so that we can serve our Creator in a complete way.
Composure is likewise an absolute necessity to be able to delve into Torah, so that we can analyze properly and arrive at the correct conclusion according to the truth of the Torah, and to be able to live in the depths of Halachah. Fortunate is he who can have his own place to learn the Torah, without disturbances from the children and household members. Included in all this is the fact that it is correct for a person to be composed in all his actions whether it is in learning, service of Hashem or any worldly activity, for the result of haste is regret, whereas unhurriedness is worth a fortune.