Faith as I wish to approach it here is how the Bible defines it, as anything else that comes after this definition is subject to this premise.
"Faith is the assured expectation of what is hoped for, the evident demonstration (or "convincing evidence.") of realities that are not seen."
So, by this definition Biblical Faith involves 2 things
1. a title deed to our hopes.
2. convincing evidence that unseen things are real.
By that definition it can truly be said that "faith is not a possession of all people." (2 Thess 3:2b)
But by definition, that sort of faith would be very valuable and rooted in reason.
It is not an emotional conversion though emotions are very much tied into our hopes and the things we care about.
The Bible relates at least two things that will help a person build faith, if that is what they wish.
1. Observing creation.
2. Observing the effect of following the Bible's practical wisdom.
1. "For his invisible qualities are clearly seen from the world's creation onward, because they are perceived by the things made, even his eternal power and Godship, so that they are inexcusable." - Rom 1:20
....."Of course, every house is constructed by someone, but the one who constructed all things is God." - Hebrews 3:4 (Which is more complex - our homes or our bodies?)
2. "Taste and see that Jehovah is good; Happy is the man who takes refuge in him." - Ps 34:8 (Of the five senses, taste requires us to internalize to experience by making it a part of us.)
Going beyond that, there are ways to be convinced (claim faith as per this definition), that the Bible is really the word of at least a God. Three such ways could be...
1.Though not a science text book, when touching on physical science it would always prove accurate.
2. It's practical wisdom would, by following it, prove subjectively to always be reliable.
3. When it claims to foretell the future, it would always have proved much more accurate than the weatherman who tells us it will rain tomorrow. (There may even be evidence that the book was written before the fulfillments via archeology and other written records.)
I consider what I have is faith. It satisfies my need and allows me to trust in someone about what is best for me in the long run and not just what I may want.