Free Tips on Emotional Blocking and Systematic Releasing

STEP 1 - THE 'SAFE' PLACE
Set yourself up an 'emotional release room'. No distractions, nothing much else to do there (doing something such as wallpaper stripping in the same place could be a good idea - it's a great way to send that energy outwards and get your decorating done at the same time - but be careful where you put that paper scraper, they hurt), no unwanted interruptions. Give yourself this right. Accept the emotional process as normal. You could have something to write on if writing helps. It must be a place others won't see you.
STEP 2 - FOCUS
Move yourself gradually towards whatever element of your anger issue is most readily apparent to you. If it's the thoughts, the words, the images, that come to you first, then follow those. If you just have feelings and don't know what the thoughts, words or images behind the feelings are - move towards the feelings instead and wait for the 'facts and figures' to appear of their own accord. You may find this very painful; you may have to spend weeks getting yourself to acknowledge, accept and continually move towards these feelings. Keep going - learn that as long as you're in your 'safe' room it's OK. It's safe. There's nothing 'bad' happening.
STEP 3 - 'UNITISATION'
Your goal is to bring together the thinking - the issue - the words or images or memories - together with the emotional energy you have trapped inside. You need to unite the overall experience. Imagine you're bringing both a balloon and the air filling it together. You're going to fill the balloon so full of the emotional 'air' the balloon will eventually 'pop' into nothingness. You may find yourself pacing; you may find yourself shouting (I'd recommend you imagine yourself shouting rather than actually shouting, try shout-whispering at your imagined targets (otherwise you might attract unwanted attention to yourself). Pretend the 'issue' and the target of your anger are with you at the time - but remind yourself they're not - keep focusing on the 'safeness' of this process. No-one's actually being harmed.
STEP 4 - EMOTIONAL RELEASE
Taking the issues at the centre of your rage - accept these issues are OK to be angry about. Pat yourself on the back and allow yourself to be angry about those issues; then allow the rage to travel through the issues as if they were a door or portal. Keep going, keep going, keep going.
In fact, keep going until you really 'let rip' and tell the imagined people or person what you're really thinking and feeling, how much damage or harm or pain they've caused you; what it is you've lost. Insult these imaginations whilst reminding yourself there's no actual harm being done. Because there isn't. At some point, you will stop being angry. Your unconscious becomes convinced the cycle is complete and the rage will be gone.