Understanding the meaning of trust allows you to work toward being a trusted and trusting person…
But trust can’t be won overnight. Trust must be carefully constructed, vigor-ously nurtured, and constantly reinforced. Trust is established over time, gradually, through a long chain of successful experiences. In the early stages of relationships, whether personal or business, we extend ourselves in small ways and observe the responses to our actions. Then we take appropriate action, withdrawing, maintaining our behaviour, or extending ourselves a bit further each time until trust is established.
And remember that, although trust takes a long time to develop, it can be destroyed by a single action. Moreover, once lost it is very difficult to re-establish.
Frank Sonnenberg in Managing with a Conscience.