though being more optimistic has helped me a lot ..there is a balance between optimism and pessimism.
how to be more optimistic . first be overly pessimistic
write down a lit of everything that can go wrong ..or you believe cab go wrong .
then write down the worst that can happen if each goes wrong.. and then prepare how ever you can for what may goes wrong ..know the solution before there is a problem. because there are few problems others have not had .