This negative attitude reflects your thoughts which determines your success or failure.
I'm an amateur editor, I'm looking to improve myself drastically. This is one sentence in a copy that I was editing that has persistently stuck with me for quite some time now. For one thing, I tagged the determines as a pluralization error and changed it to "determine" did I make the right call here? Are there other issues in this particular sentence that I should have taken note of?
Can anyone point out the parts of the sentence in this instance as well? For reference.