While there are disagreements that fall under the category of "agree to disagree," it is always the better practice to develop good communication techniques to resolve disagreements in a relationship.
Leaving issues unresolved can lead to resentment that can turn into a big ugly monster.
Slay the big ugly monster before he even shows that ugly face by developing some great communication techniques.
The following is what my research found on good communication . . .
1. It is important to give your full attention with no distractions like the television or sitting behind the computer to really listen to what the other person is saying.
2. You should repeat back to them what you heard them say . . . "what I hear you saying is . . ." Sometimes what we think we hear is not exactly what was said, so be sure to really know and understand what they are telling you.
3. Speak up and express your feelings. No one is a mind reader! They won't know what you are feeling unless you tell them.
4. Speak in a non-threatening manner in a calm tone. When threatened, the response is usually a defensive one that is counter-productive to good communication.
5. Take a break from the conversation and give each other space if the conversation becomes heated to prevent further escalation which leads to saying hurtful things to each other. Do you really hear what the other person is saying while yelling? Calm down and step away before it gets to that point.
6. Eye contact and giving the other person your full attention is very important since great communication can also be non-verbal. Back to #1 . . . turn off the television and computer . . . no distractions.
7. Allow enough time to have your conversation without the feeling of either person being rushed which helps put all of the other communication techniques into practice.