Hi
Hope you are feeling better now since you posted.
I personally don't think you need anger management. It is very easy when tired to loose it a bit, especially with two young children... I know as I have two girls myself (
) aged 2,5 et 14 months.
I would suggest to try different strategies. In the situation you describe, I no longer buy different colours (except clothes) so that they always have exactly the same (I know this is important to them and an important part of growing up. I am the middle one of 3 girls myself and for a long time we counted everything
to the despair of my poor mum).
For the things I already have and need to buy a second one but cant find the same colour, well I either make them do a draw or most times I decide and they have to get on with it and the day after or in the afternoon I change (take turns). If this end up with tears and screams (which often happens) well I ignore it (however hard it is) and put the one (or the two) in a different room and she has to come back when calmer.
If this doesnt work, I leave the room myself (I always make sure they see me doing so) and I go and sit on the sofa with a magazine (I pretend then to read as at this point I am so stressed out that I cannot concentrate) and I tell them I will be available when the screams stop. It usually take 2-3 min for them to calm down and ask me to stop reading because they are OK now.
It is extremely hard because children know how to bug you! But you must try to not let it affect you. You need to be convinced that this is a phase and they do that because you react and they want your reaction. They are not malicious but this is just what children do to make sure their boundaries exist because this what make them secure. If dont react but re explain the rule again and again, eventually they will feel secure and would stop doing that. But then they'll do something else.
Everyday my eldest tries to put some food on the floor or say before even trying it that "I dont like it maman". Everyday and every meals I have to repeat the same thing, I used to get really cross at some point until I realised she just need to make sure that from one meal to the next her world hasnt changed...
One last thing, choose your battles. Not all of them are worth fighting... By letting them having their way sometimes you save your real no for the things that are really important to you. For me it is table manners but not the mess in the house, for others it is other things. Find your own.
Good luck!