I'm the last person to discount the importance of future planning, but you must be careful not to let anxiety about the future paralyze your ability to move forward. You must learn to practice real-time decision making. It's simple: when faced with a critical decision recognize that you can't anticipate how the outcome will impact you in a year, but rather ask yourself, "how will the decision I make impact me (my career, family etc.) today?"
It's not as easy as it sounds. We are accustom to weighing the pros and cons; considering every outcome. But we were never gifted a crystal ball and without one, we can do little more than take a leap of faith. We must trust that ongoing real-time decision making will in fact have a cumulative impact on our life's design. ( i.e. a good decision today will lead to a good decision tomorrow and so forth.)