We can often be confused about truth and belief. Some people think that truth is some kind of absolute that will be self-evident to everyone. After all what is truth for me must be truth for you.
If not then you are deluding yourself and it becomes our responsibility to lead you to the light because we know what the truth is. There has been a lot of pain and suffering based on this perspective.
How can someone not allow others to think for themselves?
It is because of their beliefs. Beliefs do not require logic, proof, or explanation. We believe because we believe. What does this have to do with truth.
Simply that nothing is true unless we believe it is true. Truth is driven by belief and not the other way around. When we believe we will ignore everything contrary to our beliefs and interpret everything in accordance to those beliefs.
This becomes a closed loop that will feed on it's self until we break the cycle. We break the cycle by allowing that everyone is entitled to their beliefs and truths. We may often disagree but understand that we cannot change someone else's beliefs; only they can.
This requires that we give our perspective not to convince or convert but in order that they may change their own minds. Sometimes it works but often it does not. Then we need to let go of the need to convert them. We need to simply demonstrate our beliefs and truths through our actions.
The choice of change is the one thing that is always ours.