OMG i feel exactly the same as you!!
Ever since i applied to cambridge ive been feeling soooo depressed about my applications, my rejections, not being good enough, feeling stupid, having parents presurize me, too many responsibilities and all my friends have left for uni so i feel soo alone.. i dont know why its affecting me so much, i just cant help feeling this burning inside of me, like im a volcano waiting to explode any minute and when im at home i keep crying at night...
Mostly at school i, like yourself, am the happiest person, or at least i act that way and i make jokes etc but this past week ive felt sooo sh*t about myself (mainly cause of my really crap lnat mark and my recent ucl rejection and cause of the fact that i never wanted to apply for law but for history instead but parents didnt let me ( so i feel like a reject basically) ). Ive been so miserable in class and i hate it because i always LOve to talk and contribute but im just not up to it cause i keep dwelling on how crap i am.. I love sports as well but i feel soo lethargic and so cant be bothered to do anything (but sing cause i love that.. diff story!! lol) and i comfort eat sooooooooo much!! ive put on soo much weight since the summer cause im so worried bout whether im going to get into uni or not and how my life will be in the end.
i used to have an idea about what i wanted to be "when i was grown up" but now im so confused and generally feel extremely under-confident and no matter what anyone says, i feel the same..
I hate feeling this way because im genuinely very lively, but now i just cant help feeling upset and down all the time and i cant fake being happy anymore.. ive had enough of everything and everyone..