If you socialize more, you may think less. If you think more, you may socialize less. Either way can hinder the achievement of many goals. The world is odd. Some of the best ideas arrive only after the search for them has been delayed or abandoned.
Balance is beneficial but not always. A dream may require dedication to a particular extreme, "forsaking all others."
The question is whether it is the right dream, a noble dream, and whether you are willing to pay the price.