MacBook Pro freezing

Leroy, thank you for your prompt response. I ran the utility and found that it was a third-party app causing the freeze, Evernote. It had crashed multiple times even though I did not have the Evernote Helper launched on startup. I read through all of the report and got rid of other applications that were not compatible as well as orphaned files/installers that were unsuccessfully removed and left behind. I also removed the extension for Evernote Web Clipper because Firefox froze a few times so it's possible that the extension also contributed to the freeze. Thank you again!