yes, I agree with you. Optimism is an attitude that a successful person must possess.
I am optimistic with bitcoin from the first I know bitcoin, I am sure that bitcoin will develop well, even I am sure that someday bitcoin will be equivalent to lamborghini price.
This is the simplest rule of law of attraction, like attracts like. If you want to attract money you have to have attitude of optimism. Personally I have a lot of optimism for 2018.