Syntax: This segment uses past tense ('I used to believe') to establish a contrast between past illusion and present reality. The prepositional phrase 'on the edge of something beautiful' functions as a complement describing the state of 'burning'. The repetition of 'something beautiful' and 'on a miracle' uses anadiplosis (repeating the last word of a clause at the beginning of the next) for emphasis and musicality.
Morphology: 'Burning' is the present participle form of 'burn', used here to describe a continuous, intense state. 'Selling' is the present participle of 'sell', used metaphorically. The apostrophe in 'burnin'' indicates a casual pronunciation where the final 'g' is dropped, common in song lyrics and informal speech.

Syntax: The imperative mood 'Say, go through...' functions as an encouragement or instruction. 'Heaven's a heartbreak away' uses a possessive contraction ('Heaven is' becomes 'Heaven's'). The parallel structure 'Never let you go, never let me down' creates a rhythmic vow. 'It's been a hell of a ride' uses the present perfect continuous tense ('has been') to describe an experience continuing from the past to the present.
Morphology: 'Darkest' is the superlative form of the adjective 'dark', modified by 'of days' to specify the context. 'Hell of a' is an informal intensifier where 'hell' functions as a noun used adverbially. 'Driving' is the present participle, indicating the continuous action of navigating the difficult situation.

Syntax: The structure uses negative imperatives ('Don't you give up') contrasted with positive future declarations ('I won't give up'). The repetition of 'Let me love you' uses the imperative mood in a request form. The 'Nah-nah-nah' is a vocalization placeholder, common in pop music, that maintains rhythm and emotional emphasis.
Morphology: 'Give up' is a phrasal verb. 'Won't' is the contraction of 'will not', expressing future negative intention. 'Let' is in the base form following the structure of an imperative request.

Syntax: 'Don't fall asleep at the wheel' is an imperative warning. 'We've got' is a contraction of 'we have got', a common informal way to express possession or existence. 'All that we need' uses 'that' as a relative pronoun introducing the clause 'is a rude awakening'. The phrase 'to know we're good enough' is an infinitive phrase showing purpose.
Morphology: 'Ahead' is an adverb of place. 'Rude' is an adjective modifying the noun 'awakening'. 'Enough' is an adverb modifying the adjective phrase 'good enough'. 'We're' is the contraction of 'we are'.