Genuineness and Integrity Personal integrity reaches its height in the absence of pretense. The truly decent character has thoroughly searched his/her heart. He/she knows it well, and strives to keep it pure. This takes a great deal of persistent mindfulness. (See also: Self-Mastery Requires Mindfulness.) Integrity takes effort. You have to stay very awake (i.e. conscious). You have to know what’s going on inside of you. And you have to properly discern what’s pure and unitive and what isn’t. That way following your heart becomes a way of living that creates, unites, and energizes.
Source: Knowing and Following Your Heart