@matth411
There is not point in getting stressed over it - I know you are probably thinking what does she know about it, how can I not get stressed/angry over it... well its not going to change the situation or make your commute any easier, all you can do is look back at each situation and work out if you took the best approach - so for a long line of cars that you can't get passed,
what about the other side of the road - overtake them as a motorbike would? In certain circumstances this works just fine (and is one I will be using shortly on my 22 mile commute). Just watch for right hand signals, junctions etc and be VERY careful at these areas - only do it with no oncoming vehicles and pull back over when vehicles start to move again.
As for going up the inside - I don't unless the vehicles are stationary and clearly not going to be moving - so red traffic lights only. I just wait like a car would otherwise and I have found that drivers cut me much more slack for that approach.
Take each commute as a learning experience and evaluate who you could have responded differently to make the situation better/easier. It does not matter who is at fault here - it is your response to the situation that counts and just let go of the stress and agro.