WHAT IS THE TRUTH OF LIFE?

I often wonder how people are so certain about everything.
They hold their opinions and defend it with so much belief and here I am uncertain about everything
i keep thinking how can I decide what is right and what is wrong ?
How can I be certain that my version of the truth is the actual truth.
What if the truth I chose is just something that aligns with me, something I find comfortable. What if I was born in another corner of the world
Would I still be myself?
Would my thoughts, my actions, my beliefs
Still be same ?
If not then how are we so certain that we know the truth
And who is defining this truth.
Most likely our surroundings , our environment
If merely an environment shapes our definition of truth, then is it even a truth?
When we are born, within seconds our name,
Religion, cast , nationality every truth about us is chosen by others
It is given in a plate to us and then we live with it.
Without questioning it, without pondering.
This realization has changed me so much in ways I can’t even explain. My identity and my whole belief system shattered. The beliefs I held so close felt like a delusion and sometimes I find it suffocating to see others around me still in that delusion. However I’ve realised that everyone has their own journey so there’s no point in trying to make others see something from your point of view. If they want to live in the truth they’ve created just let them be. Maybe that’s how peace is achieved.