Most times we promise and soon often fail to meet up. We should learn to under-promise and over-deliver.
A lot of people borrow money and refuse to pay back and as such, often don't get from that person or source again.
One way of building trust is to pay back what you owe and after some time borrow again even when you don't need
the money and ensure you pay before the due date. It is better to promise one item than promise two items and don't meet up. rather promise one item and deliver two. When you act like these often, it will build trust and confidence.