These Library of Congress Subject Headings can give you more focused results. Examples:
Psychology -- Methods Psychology -- History Emotions -- Physiological aspects
Depression -- Mental Anxiety -- Treatment Post-traumatic stress disorder -- Treatment
Mental Disorders -- Nursing Motivation (Psychology) Psychology -- Vocational guidance
Search tips:
To find books using subjects that can have variant endings, use truncation, or wildcard endings. This technique looks for any ending of a word after an asterisk. Not sure if a book is listed by the terms "motivate" or "motivation"? Type in "motivat*" to retrieve books listing either. Example: motivat* and psycholog*
You may also search for names (Freud) and other specific topics. Consult a reference librarian if you are not finding what you need.
Aging and Mental Health by 
I Feel You by 
Hyperfocus by 
How the Child's Mind Develops by 
Reader, Come Home by 
The Personality Brokers by 
The Elephant in the Brain by CrashCourse - Psychology was created by the Green Brothers in 2014. The collection reviews an array of topics including consciousness, motivation and personality disorders. These videos are a great way to familiarize yourself with topics you'll most likely review in class. Their channel has around 2.6 million subscribers and over 178 million video views.
Subject headings like these work well to find books in the library:
You may also use the word "and" to combine two subjects in a search: bipolar and child development
The Library of Congress' call number for Psychology books is BF.
The Psychology Major by 
Majoring in Psych? by 
Diagnostic and Statistical Manual of Mental Disorders (Dsm-5®) by 