Dear Radhika,
There should not be any room for depression. Life is always full of experience and set backs. But, these set backs and difficult times makes us more strong to fight with the situation. It was well decided to choose CA. After sometimes, certainly you will get good job. Don't loose patience. Keep trying for jobs. First try to do it in CA firm and gain some practical experience. Please don't become sad we happy and you will certainly get your goal may be after some time.