Hi Dan,
My life has a lesson which everyone who searches comes to if they study and read what has been written.
The bible and other books claiming a faith in any G/god should have a way which is clearly mapped out.
The OT shows the way to find God is to obey his commands.
The NT shows that way is through obeying the teachings of Christ which sum up the meaning of the law and commandments in the OT.
It isn't something you can read and the words and truth will jump off the page to you or put your mind into gear of understanding.
I say it is 'personal' because for myself it did not happen till my search was done with a thirst for truth and willingness to commit to the truth when I found it.
So faith is personal no one can give it to you it is something we find as individuals. I found God cannot lie when reading the bible. I found that we have to be honest to ourselves.
If the bible does not do as it says then where is there any evidence to give you faith.
It is about truth in all it's fullness. No about proving it to ourselves even. But the word of God should take root and prove it for us.
So I say it is personal and how we think and use our minds is very important, as well as our own honesty and especially to ourselves.
We have to find it for ourselves.