Apologizing is something that is pretty important these days. Not apologizing could lead to:  

Losing friends

Messing up business deals

Make people not like you and then if this happens thin their less likely to use your product.

While apologizing could:

Make you friends

Cause people to want to make deals more often

Cause people to want to buy your product just because they like you.

Now for the most important, how to apologize.

You want to have a good attitude or you look like your being forced. Tell them what you did wrong and just say sorry and kinda of joke around (don’t joke around about the person just kinda of make fun of yourself).  This is EXTREMELY IMPORTANT,  never say something wrong the person did,  or say ”but” because that contradicts the entire apoligy. I’ll give you an example of how I did it this week.

 ”Dude I’m sorry I called you short. I’m pretty short too.”

 I think that forgiving is important. 

Don’t say anything is Unforgivable because It says in Philippians 4:13, I can do anything through HIM who gives me strength.” That includes forgiving. I’ve read books about  matadors who forgave their torturers so I think that not returning your favorite CD is forgivable.