Science might not do that job, but a least it can point out to you the flaws in your reasoning, and, once you have settled on an reasoned objective, help you construct effective tools, techniques and programs to reach that objective. In other words, Science is what keeps you from insisting earth is the center around which the universe revolves, sacrificing virgins to the rain gods in a drought, or investing in gyms to get to the moon by improving the high jump.