The possuk says "death and life are in the hand of the tongue." Presumably the possuk should have said "life and death are in the hand of the tongue"? Answers Reb Tzvi Meir Zilverberg that the possuk is referring to one who fell, i.e. "he died"... so the way back to "life" is through the tongue. For example, if you acted not nicely to your wife, say you got into a disagreement with her... Are you going to obstinately stick to your stance and dig a deeper hole, or are you going to apologize?
In GYE terms, I think the tongue referred to in the possuk is to regain life by reaching out to a sponsor or a chaver by coming clean and getting out of isolation. You can also regain "life" through the tongue by speaking to Hashem and asking Him for help.