You'll need to understand God's way clearly. I mean fully and honest to understand His Word and purposes. Otherwise, satan will lead you to evil good and let's you to control yourself without God. You'll say no to Him, because you think you are perfect. But if you can't handle or control yourself, because it is too big and dangerous, you'll say yes to God, because He is bigger than anything in the universe. You'll say yes to Him, because He leads you to satisfaction needs that you'll be blessed and receive miracles. Because love does not envy. See 1 Corinthians 13:4.
Proverbs 4:25-26, "Let your eyes look straight ahead, fix your gaze directly before you. Make level paths for your feet and take only ways that are firm."
Early in my journey, I said yes to God- probably out of a desire to right "wrongs" I'd made in my life. When things got bad, I turned to God for help. As I am further in my journey now, and studying more of his word, closer and closer to Him- I now continue to say Yes to God, b/c I understand what obedience means to Him, and what it brings to me.