First one is: don't believe your thoughts. Observe them with detachment, even if the thought starts with "I". Especially if the thought starts with "I". Though

First one is: don't believe your thoughts. Observe them with detachment, even if the thought starts with "I". Especially if the thought starts with "I". Thoughts don't define you! Don't let them capture your attention. After all, do you really need to think to wash the dishes or to drive your car? Use your mind when it's needed and then let it rest when it's not. Second one is: learn to discern influences, beneficial or not. Only then can you let yourself be influenced consciously. This will protect you from any kind of manipulation.