When you think long term, you can see the big picture. However, I fully understand that this can also be difficult, as you think, "How can I get there if I am thinking about what I want to achieve in 5 years."
Thus, my advice is to create effective short-term goals which will help you reach the long-term big goal. Every time you reach a short-term goal, it helps you see that you are getting closer to the long-term goal,
By thinking long-term and planning short-term, you are setting yourself up for greater success.