Reasons for Unsatisfactory Performance:
Upon entering the university I found the freedom of living on my own and unfortunately, I used it to distract myself from my study at UCSD.
^You can make the first clause more concise. 'As a University student, I was living on my own and found freedom. However, this freedom did not necessarily prove fruitful, as it became a distraction from my studies at UCSD.
I became deeply attached to computer gaming that consumed time needed for studying and as a result my grades suffered over the two years I attended the university.
^A bit wordy with no commas or full stops.
I became deeply attached to computer gaming. This consumed time that was needed for studying. Subsequently, my grades suffered over the two years I attended the University.
During the second year I isolated myself completely from my roommates as I delved into the online game World of Warcraft.
^I am not sure if 'delve' is the correct word.
My suggestion: as I delved in the online world of fantasy and witchcraft;(maybe link with next sentence)World of Warcraft made me lose interest as well as focus in my classes.
When the problem started it my roommates attempted to help but I ignored their advice because I thought I can solve it on my own.
^The problem started it? Huh
'As the problem grew'?, my roommates tried to help but I ignored their advice because I thought I can solve it on my own.
*By the way, I thought you were living on your own? You mentioned that in your opening sentence..
After receiving the first academic probation at the end of first academic year, I improved my grades for one semester and then completely disregarded studying. When it was obvious that I couldn't fight my addiction I should have sought counseling but I
didn't. ^Confirm if 'didnt' will be approved of. However I would suggest just sticking to the good old 'did not'.
The result of all this is that I drove myself further and further from excelling in education and eventually resulting in my dismissal.
^You drove yourself further and further 'away' from excelling in education, WHICH eventually resulted in your dismissal.
Faisal P, Essayforum.com Contributor