Job Offered

Ok, i got the job offer. Been starting to think of whether I am up to it a not. Yeah, i know I haven't even try, why do i think so much. 100%. Weihong have to give 100% for this. This is my ladder to another level. Should i or should i not. Hmmm.. I've signed the contract and its still with me. Should i sms her and tell her yes, i agreed to have the job? hmm I think i should i guess.