Kaka, don't worry la, we all faced such fear and dilemma b4 and perhaps more to come. Life has many hurdles to cross, many lessons to learn. When we failed, that doesn't mean we will carry that failure label throughout our lives. Failure only means we are not yet ready to win. Don't give yourself too much stress, you only add more pressure to yourself. All you need is to give your best. Sometimes, we take much longer time to succeed, i always think it's the journey that really matters... Even if you fall, you know you can stand up. It's a choice and don't make it an attachment.
Don't worry ok, like fab said you might not fall at all. Now, i shall end this comment with a brilliant quote...
"If you can solve your problem, then what is the need of worrying? If you cannot solve it, then what is the use of worrying? " -Shantideva
I love that quote it is so bloody true - change what you can and don't worry about what is out of your hands since you cant change it anyway :D
Its very tiring to be needed..sometimes u'll be taken granted for..
let nature tk it course,dear.
hugz