Reliable people value the truth. When they see something, they speak up.
Reliable people are trusted. When a complex task comes up, reliable people get the opportunity and responsibility.
Reliable people are respected. Bosses, spouses, children, neighbors, and teammates develop a deep appreciation for one who is reliable. Everyone has suffered the consequences of dealing with others who are unreliable.
Reliable people are valued. It may be one of the chief traits you can develop.