I never want to offend anyone or be too annoying. I know that's it's impossible to live without offending EVER, though I do put a lot of effort into doing that. My catchphrase is, "I'm sorry! I'm so sorry! Please forgive me! I'm sorry!" And I always mean it, otherwise I don't say it. If you've ever notice me sitting there with the anime smile: ^_^
and you're looking for an apology and I haven't said it in that moment, chances are I'm not sorry and not going to say it. Unless it's through texting, forums, or emails, then chances are I'm afk or left my phone on the nightstand, and haven't seen your message yet to apologize.

I sometimes have the bad habit for apologizing for things that aren't my fault or not up to me to apologize for. My friends and family laugh at this, often screaming, "Why are you apologizing? You didn't do/cause this!" And I always reply honestly, "I know, but I'm still sorry for it." Then I want to apologize for apologizing, which is madness, I know! u_u

The first thing I learn to say in any language I try my hand in is, "I'm sorry." I won't start lessons on anything else, until I've learn the many ways to apologize in that language first. For example, I didn't start learning other phrases in Japanese until I've learn, "gomen nasai" (i'm sorry - for friends), "sumimasen" (i'm sorry - for non friends), and "moushiwake gozaimasen" (i'm sorry and screwed up so royally that you should smack me with a tuna!). These are what I need the most, because I will be saying them often in Japan. ;^_^

I know, it could be a sign of my anxiety or a self-esteem issue. I do try to apologize a lot less, because it does annoy people. Which makes me want to apologize more for annoying them. A vicious cycle! o_o
Though, it's funny because when I first saw an episode of the anime "Fruits Basket", with the character named Ritsu who apologized too much, I turned to my sister and asked... "That's not like me, is it?" And she answered honestly, "Yes, it is." with a grin. And I immediately screamed, "Oh, my god! I'm sorry!" ;>_<
I'm hopeless. LOL!