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.
I can definitely tell that bitcoin 2018 wiill be a good year. Being optimistic to all possibilities that bitcoin will raise like a tower, trust me people who don't know what bitcoin is, that's the time that they will cry and beg to go back in past to invest to bitcoin.