I like it I'm not gonna crack
I miss you I'm not gonna crack
I love you I'm not gonna crack
I killed you I'm not gonna crack
According to biographer Michael Azerrad, the song references a man’s turn towards religion to cope with the death of his girlfriend and keep from suicide. Similarly, Lithium, a mood stabilizer often prescribed for those suffering from manic depression, can help manage the depressive, sometimes suicidal feelings that accompany the illness. Lithium can dull emotions, making them, in some ways, more manageable, just as religion, for Cobain, can dull the pain of loss enough to keep him from cracking.
The lyrics suggest Cobain could be going crazy inside his own head. Everything denotes some type of mental breakdown.
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