The way to find your spiritual truth is not through any particular system. You just need an approach that can support an attitude of spiritual aspiration.
There is a simple test to determine if you have found a truth:
Did what you find make you happy?
Did it strike you as unmistakably clear?
Did possessing this knowledge change your life in a meaningful way?
Do arguments against your truth make you smile?
By unmistakably clear, I mean that once you 'saw' your truth you did not have to think about it or justify it in your own mind.
If you can answer yes to these four questions, you have found your truth, at least in part.
Inversely, if you see someone behaving in ways that indicate these answers are no, simply be aware they are still searching.