unease

i'm unease with my current condition
for everything if full of uncertainties

concerning my future>>>undecisive
concerning relationship>>>unsecure

in fact
i have come to another junction of my life
its like choosing going right or going left,again
50% of likeliness to success as well as regret for each option

how i wish there an option which is 100% success with 0% regret

in the past
i did the right choice of being where i'm now
but right now
i don't have the confidence of making the right choice again

there are too much things i'm afraid of losing
of cause the priority goes to my beloved friends
i guess i so comfortable in this environment where i have live for 2 and a half year
i'm simply afraid of starting a new life in a stranger environment

can somebody tell me
what is best for me???
and what decision should i make?