do it.

and by far this is the best thing about life... if u actually dont make it, it can never be boring.. or as one might say that the human nature is such that we are never contended and seeking newer aims or destinations is always the next thing to do once u have successfully accomplished your last endeavor.
there is always hope to achieve next levels in what you already know, and improve yourself or to have a completely new experience. and through these very experiences you can learn the most difficult lessons of life in the easiest and least painful ways. but of course for that you ll have to be ready to take the risks involved, coz if u are just worried that what will happen if it goes wrong, then sorry bro, there is no way you can actually learn anything, as until u fail u wont know how gud success feels.
so if u r scared today, most probably u ll be regretting it tomorrow coz u dint try anything for the fear of being hurt and now when u cant do t any longer u just feel if .. if only u had tried it and learned from it, gud bad whatever the outcome may have been.
and hence Mark Twain has put it correctly that after 20 years would not regret what u did but what u dint do.