Maybe eating breakfast will help me get rid of some of the knots in my stomach. (Para. 5)
Meaning: Maybe eating breakfast will help me remove this tension.
get rid of:
(1) free oneself from (something unwanted or unpleasant)
The medicine will help me get rid of my cold. 这药可帮我治疗感冒。
(2) drive away or destroy
There are too many flies in the dining-room; they should think of a way to get rid of them. 餐厅里苍蝇太多，他们该想个办法消灭它们。
knots in my stomach: see Note 2