Musar su Proverbi 3:18

There is yet another general tikkun distinctive for the trait of lashon hara, and that is Torah study, as stated in Arachin 15b: "R. Chamma b. R. Chanina said: 'What is the amendment for the speakers of lashon hara? If he is a Torah scholar, let him occupy himself with Torah, as it is written (Proverbs 15:4): 'The healer of the tongue is the tree of life,' and the tree of life is none other than Torah, as it is written (Ibid. 3:18): 'It [Torah] is a tree of life to those who hold fast to it.'" As to its being called "a tree of life" — "Death and life are in the hand of the tongue" (Ibid. 18:21). If so, one who speaks lashon hara acquires for himself eternal death, wherefore Scripture counseled one who wished to heal his tongue to eat from the tree of life, which is Torah, "and he shall eat [thereof] and live forever."

In Sefer Charedim we find that even though one is obligated in all of the mitzvoth he must still hold fast to one of them, with great strength and constancy, that he does not transgress all the days of his life. For the generality of Torah, comprised of the 613 mitzvoth, is called a tree of life, viz. (Mishlei 3:18): "It is a tree of life to those who hold fast to it." And one who holds fast to one branch of a tree holds all of them, all being one body, following after that branch. But if he tried to hold on to all of the branches together, he could not do so. And this is the intent of Shabbath 118b: "R. Nachman b. Yitzchak said: 'May it [(reward)] so come to me that I fulfilled [the mitzvah of] the three Sabbath meals.' …R. Sheheth said: 'May it so come to me that I fulfilled the mitzvah of tzitzith!' R. Yosef asked R. Yosef b. Rabbah: 'Which mitzvah is your father most scrupulous in?' He answered: 'The mitzvah of tzitzith. One day he was going up a ladder when one of his fringes tore, and he would not come down until he had repaired it.'" And Rashi explains "I fulfilled the mitzvah of tefillin" as his not having walked four ells without tefillin. Similarly, with tzitzith… See the Sefer Charedim there, who adduces proof for his words from the Yerushalmi, too, that because of this, one's days will be enhanced and lengthened in the world which is entirely good and long.

And if a person transgressed [a sin that warrants] excision or a death penalty from the court and he repents: Since his iniquity is not absolved without afflictions - given that repentance suspends [the punishment], but afflictions absolve - he should prepare his heart to do the commandments that protect [him] from the afflictions, such as the commandment of charity. For it also saves from death, as it is stated (Proverbs 10:2), "but righteousness (tsedekah , which can also mean, charity) saves from death." And one who does not have money to give charity, should speak well about the poor person, so that he will be a [spokesman] for him, such that others do well by him. And our Rabbis, may their memory be blessed, said (Bava Batra 9a), “Greater is the one who causes [a commandment] to be done than one who does it.” And likewise should he involve himself with deeds of loving-kindness, to help his fellow with his counsel and his efforts. And [it is] like our Rabbis, may their memory be blessed, said (Sukkah 49b), “Acts of kindness are superior to charity [...]: Charity can be performed only with one’s money, while acts of kindness can be performed both with his person and with his money. Charity is given to the poor, while acts of kindness are performed both for the poor and for the rich.” And likewise should he speak to the heart of the poor person and honor him and console him from his distress, like the matter that is stated (Isaiah 58:10), “And you offer your compassion to the hungry.” And our Rabbis, may their memory be blessed, said (Bava Batra 9b) that one who appeases his fellow with words is greater than one who gives [him] charity. And likewise should he be involved in the commandments of visiting the sick, burying the dead, consoling the mourners and rejoicing the groom and bride. For all of these are from the ways of kindness.
And corresponding to all of them is the commandment of Torah study for the sake of the Heavens. And all of the counsel that we have mentioned is included in that which King Solomon, peace be upon him, said (Proverbs 16:6), “Iniquity is atoned by kindness and truth.” For the acquisition of Torah [knowledge] is called the acquisition of truth, as it is stated (Proverbs 23:23), “Acquire the truth and do not sell it.” And it is stated (Psalms 119:142), “and Your Torah is truth.” And our Rabbis, may their memory be blessed, said (Vayikra Rabbah 25:1), “‘It is a tree of life to those who grasp it’ (Proverbs 3:18) - [if] a person transgressed [a sin that warrants] excision or a death penalty from the court: If he was accustomed to reading one chapter [of Mishnah] a day, he should read two chapters; if he was accustomed to reading one section [of Torah], he should read two sections.” And Torah [study] protects him from afflictions from two angles: The first is because our Sages, may their memory be blessed, said (Shabbat 127b), “Torah study corresponds to all of [the other commandments combined].” And the second is that when he toils in Torah, exerts himself upon it and pushes away the sleep from his eyes - it is counted in place of afflictions. [It is] as our Rabbis, may their memory be blessed, said (Sanhedrin 99b), “All bodies are born for toil. Happy is one whose exertion is for Torah.” And they said (Sanhedrin 26b), “Why is the Torah called wisdom (tushiyya)? Because it weakens (mateshet) the strength of a person.”