On each person, use is not what you learn, learning is not what you use, has occupied a large part of their own words and actions, coupled with some biased obsessions that make people's perceptions stagnant, most people are just so towards mediocrity.
Even if your brain tells you no, you can still act. The most important things in life are what you do, what you stand for, and how you act. These are far more weighty than the claims you believe about yourself.
The happiest people in the world are the ones who get to see their true selves in the mirror, and the mirror reflects exactly what our hearts desire most. But mirrors cannot provide us with real knowledge or truth, and human beings are always wasting their time in mirrors, even going crazy because of it. One cannot live in a dream, do not rely on dreams and give up on life.
Take 100% responsibility for what happened to you, and be willing to let go of blame, grumbling, and guilt, and face the matter or the person openly with "how to make this matter better" "how to make up for the lack of this matter" "How to make both sides can live better" point of view to deal with this matter.
In my opinion, life itself is a lifelong companion. No one can accompany anyone for life, parents can not, children can not, then good friends can not, then loving couples can not, only life can.