Syntax: The sentence begins with a present participle phrase ('Lying in my bed') describing the subject's state. The main clause uses the simple present tense ('I hear... and think') to describe a habitual or current mental activity. 'Caught up in circles' is a reduced adverbial phrase (it could be expanded to 'Being caught up...') describing a state of confusion.
Morphology: 'Tick' is the base form of the verb. 'Caught' is the past participle of 'catch,' used here as an adjective in the phrase 'caught up.' 'Nothing' is a compound pronoun (no + thing). 'New' is an adjective describing the noun 'thing' (implied in 'nothing').

Syntax: 'Flashback, warm nights' is a noun phrase in apposition, where 'warm nights' describes the content of the 'flashback.' 'Almost left behind' is a past participle phrase modifying 'warm nights,' indicating they were nearly forgotten. 'Suitcase of memories' is a metaphor structured as a noun ('suitcase') followed by a prepositional phrase ('of memories').
Morphology: 'Flashback' is a compound noun (flash + back). 'Left' is the past participle of 'leave.' 'Memories' is the plural form of the noun 'memory.'

Syntax: The clause 'Sometimes you picture me' uses the simple present for a recurring mental action. 'I'm walking too far ahead' is a present continuous clause functioning as the complement or content of the 'picture.' 'You're calling to me' is another present continuous clause. 'I can't hear what you've said' uses the present perfect ('have said') in a noun clause introduced by 'what,' indicating a completed act of speaking whose content is now inaccessible.
Morphology: 'Picture' is used as a verb here. 'Ahead' is an adverb of place. 'Calling' is the present participle of 'call.' 'Said' is the past participle of 'say.'

Syntax: 'Then you say, go slow' uses the imperative mood 'go slow' as the direct object of 'say.' 'I fall behind' is a simple present statement of result. 'The second hand unwinds' is a simple present metaphorical statement where the clock's hand moving backward symbolizes slowing time or reversal.
Morphology: 'Say' is in base form following 'you.' 'Go' is an imperative verb. 'Slow' is used as an adverb here (though 'slowly' is more standard). 'Falls' is the third-person singular present form of 'fall.' 'Unwinds' is the third-person singular present form of 'unwind.'

Syntax: The structure is a conditional sentence (First Conditional). 'If you're lost' is the if-clause (present simple for a real possibility). 'you can look and you will find me' is the main clause, combining ability ('can look') and future certainty ('will find'). 'Time after time' is an adverbial phrase of frequency. The parallel structure 'If you fall, I will catch you' follows the same grammatical pattern.
Morphology: 'Lost' is an adjective (past participle of 'lose'). 'Look' and 'find' are base form verbs. 'Will' is a modal verb indicating future certainty. 'Time' is a noun used repetitively. 'Catch' is a base form verb after the modal 'will.'