In the book “The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change” by Stephen Covey, the author, beautifully explains the amount of trust that exists in a relationship through the metaphor called “Emotional Bank Account(EBA)”.
We think humans are logic driven but that’s not true instead we are emotion driven. Whenever we meet someone we open an Emotional Bank Account with the other person and whatever we do we either make a deposit or a withdrawal from the account.
Kindness, courtesy, keeping promises, clarifying expectations, are the ways to deposit in the Emotional Bank Account. Being rude, breaking promises, arrogance, judging are some ways to withdraw from the Emotional Bank Account. If you have a positive balance in the EBA the relationship would sustain and last longer on the hand if you withdraw too much without making deposits at the regular intervals the relationship would not sustain and fail miserably.
Trust is developed when the Emotional Bank Balance is high.