If you use your mind to study reality, you won't understand either your mind or reality. If you study reality without using your mind, you'll understand both.
I have come slowly into possession of such powers as I have. I receive the opinions of my day. I do not conceive them. But I receive them into a vivid mind.
I'm sure you have a theme: the theme of your life. You can embellish it or desecrate it, but it's your theme, and as long as you follow it, you will experience harmony and peace of mind.