Low self-esteem is the belief that we are not good or worthy enough. It's a self-perception. You can be wealthy, beautiful, or well-liked by others and still don't feel good about yourself. The way other people perceive you doesn't affect your self-esteem. It's how you perceive yourself that matters.
Maybe if you thought about them, people never really disappeared. It sounded so corny, but there was a scientific explanation for it, too. If you believed that thoughts were energy and energy is matter and matter never disappears, then a person can never truly leave you unless you stop thinking about them. Everything you shared with a person is still there swirling around in the universe.
Life will break you. Nobody can protect you from that, and living alone won't either, for solitude will also break you with its yearning. You have to love. You have to feel. It is the reason you are here on earth. You are here to risk your heart. You are here to be swallowed up.
Your mind has a way of not letting you forget things you wish you could. Especially with people. Like, you'll always try your best to forget things that people say to you or about you, but you always remember. And you'll try to forget things you've seen that no one should see, but you just can't do it.