You know about the saying, "Feeling the fear but do it anyway"? Trust can work like that if you want. I take things to their logical extreme and then figure I can "live through" whatever bad thing(s) might happen so give it a try.

Each "act" is only one in a lifetime of thoughts, feelings, actions we do so it's like that funny TV ad we have here for a science show with an astrophysicist who goes around his neighborhood and all the people (I think it's New York) know him and ask him questions about "the universe" :-) and at one point he tells a guy to think of a question because "you don't meet an astrophysicist everyday" and does this complicated calculation sequence and figures out one's chances of meeting one are only one in a million :-) Any single act of trust can be like that, maybe extremely important but also not necessarily horrible if it goes wrong.