I was like that until I consciously started doing more and thinking less (about the ramifications). You need to start small and solve a small pain for you, then

I was like that until I consciously started doing more and thinking less (about the ramifications). You need to start small and solve a small pain for you, then go from there. You will encounter problems but you will have your full mental power to solve them. You cannot solve the big problems from ten steps ahead, you're simply not involved enough to give it your best shot. It's during the crisis that you'll find a creative solution. To take your chess analogy, if you concede at the start you're assuming the opponent will play perfectly and grind you until defeat. But mistakes are made and the balance shifts. In real life, opportunities are created just from starting something. You will learn even from the smallest task, and speaking about it to other people might open new paths for you.