I keep procrastinating things until the end and ruining my chances of a confirmed success

The current scenario is regarding university but this is applicable everywhere.

For context, I just started my masters and in the first semester, it is do or die. If you make it, the university moves you in the main semester, if not, you cannot continue. It makes sense.

I have had my share of struggles in school and this time i was doing everything correctly. I went to class. I studied frequently.

Now it is exam season. I completed 2/5 of my exams with satisfaction. 1 of the two completed exams, I will have to re-do, since the average of the course including other assignments will not make it through the threshold, but the exam will get good grades.

The 3rd exam tomorrow, i had 4 days to prepare for. It was difficult, i knew that. Programming. My previous struggles in school were also due to programming.

But I knew i would make it if i worked seriously the 4 days. I did not. I pushed it until the last day which is today, and i am overwhelmed. I know if i had given it the time i would have made it. But i did not. Im scared now.

What did i do in the 4 days? Bed rot.

I thought i had changed. Everyone did. I guess not. Disappointed.

I will have to re-do 2/5 exams. Both are related to statistical analysis and i had no background on them. I knew they would be hard. And I still did not check myself.