David wanted to build a Temple for the Lord but it was Solomon who was chosen. Just because you have a strong desire to do something does not mean you were ordained to do it. There will be times when your desire to do a thing must be submitted to the one with the grace to do it. It doesn't make you any less of a person but it does mean that you must know the difference between being able to get a thing done versus supporting the person who is supposed to do it. Grown up people can handle it both ways.