The mind exists in the constant state of "not enough." It is always hungry - hungry for knowledge, stimulus, acceptance, love...and so many other things. The mind is always greedy for more. Humans experience various feelings, such as - anger, guilt, happiness, sadness, etc. These feelings stem from our greedy minds - teaching us who we are and who we are not.
However, the feelings we feel are not personal, they are conditions of the human mind. Nothing that comes and goes is you. You are the knowing - you know what happiness, sadness, and guilt feel like - you are not the condition that is known.