Yin and Yang

Internal, inside: You should have no fear, not upset;
External, outside: It is Tao.
It is not that your mind that determines everything. It is that your mind and Tao jointly determine everything.
You need to utilize Tao to achieve your goal, but when your inside(your mind) is upset or has fear, you won't be able to realize Tao, you won't be able to utilize Tao.
Your inside(your mind) is Pin. The external Tao is Yang.  You need to have a good Yin to realize Tao, to utilize Yang, but ultimately it is Yang that helps you achieve your goal. You need to clear the hindrance(fears) on your inside so you can better see the outside, the Tao, then you can better utilize Tao to achieve your goal.