You only live once
For a person like me, I do not believe in rebirths, so this holds 100 percent true for me. And for a person who does, I am pretty sure that you would not remember anything about this life you are living. This life is only one. You will live this life only and only once. There is no way that you are going to live this life again. You can not restart it. The moments you have lost have already been faded in the darkness of time and you are left only with those which future holds for you.
You might have many ambitions and you might have many regrets but this life is only one. A single life for you to fulfill all your ambitions despite all your regrets. Complex! Isn’t it? In your path, you will face obstacles, you will face fears, your world might turn upside down. These obstacles, these fears are what makes me feel that my heart is still beating. If you can not have this feeling at times, you are not living at all. Face your fears. Feel your life.
What my perspective is that this life is made up of moments. And to have these moments, you need people. People whom you call friends, family or even enemy. And most importantly, to have these moments, you need yourself. Because only you have the power of transforming your life and only you could either fill it with the moments you could smile on remembering or the moments that could turn out as your worst nightmare.