The words that contribute to the tense mood of this passage are shake and nervousness.
Explanation:
Nick said it because of his previous experiences which were not so easy to handle and that have transformed his thoughts so much that he considered that his future would be same as his past. He even didnt remember his birthday, indicating that his mind is well occupied by the menacing experiences and thoughts. Since he has turned thirty so now people think its time to settle but for Nick its still a road of struggle ahead of him
Answer:
wally bold wally at ygvgygbhughhh