Always Being optimistic ?

Not really a good thing.

You can succeed in life when you provide the right solutions. To see solutions awarness of the problems is required : if you don't see the problems you will just ignore things that will slow you down on the way to success or worst. "Being optimistic always" will be an obstacle to see the problems. Try to be optimistic is self manipulation of your feelings which disconnect you from the real world - things can not always be positive - sometimes you are up sometimes you are down - it's life.