However in certain circumstances it is better to attend a trade school. If you know what you want to do and it doesn't require a college degree, then it doesn't make sense to go in to debt and pay for an expensive
Treat school like a job. Get up early, get to work and when your work is done at the end of the day, you can spend time on social life or organizations.
Go to class. Plan to spend 2-3 hours studying for every hour of lecture. Attend your professor's office hours and any TA review sessions. If there is a test bank, use that as a study tool to understand what your professor wants you to focus on for the test.