Time Will Only Tell

I have decided it is very hard to live with someone else when both of you are so set in your ways. One person does things one way, the other does it a completely opposite way. I am amazed at the people who can be married for years and years and become accustom to the person they are married to.

I guess you can't ask the person to change because you fell in love with those things that are different then you. But is there a way to tell them the things that bother you without hurting their feels or losing their trust?