This is me so much. At my new apprenticeship, we basically have a sort of probation period for the first semester where you need to achieve a certain average grade to be allowed to continue the apprenticeship. Accross all of the grades I got, except for one, I got the same average grades that I used to get back in school and in university where I used to do the same thing you describe. I just can't make myself work any earlier for the exams.

Today was our last exam and my average is good enough that I won't get kicked out which is a huge relief. But damn does it suck to hear that I have the same average grades I've had for years compared to my classmates who have stellar grades. I know comparing myself to my peers isn't really conducive for my self-esteem and my psyche, but I just can't help it.