ok, maybe a few tips for you. Strange thing is when it came to work my sa only really made me self aware on a bad acne day, or when speaking to people i didn't know well or a hot lady
so the tips, no specific order
1) If someone interupts you, and you are genuinly busy, ask that person to wait till you are finished, don't let yourself be a pushover
2) Don't be afraid to speak your mind, or speak up when need be, it'll show you're assertive
3) Don't take your colleagues too seriously and don't look up to them like they're better than you. They are people with as many problems as anyone else, and you should recognise that. It's easy to fall into the trap of respecting people you work with a bit too much and they can see that and might use it against you.
4) Try and be your best at what you do, chances are you'll end up better than most and with people asking for your help, rather than dumping you with work, and you can then help them on YOUR terms
5) If someone tries blaming you for something that isn't your fault, don't sit down and take it. Always be calm and don't get into a shouting match but get accross your message in a clear and assertive, but CALM fashion. Don't be walked over.
Oh, and this won't be an over night change, but something you'll have to work at
give it time and don't let them get too you