Friends:

 Anger, Irritation & Aversion is diluted Hate:
 

How to cure these painful derivatives of Hate:

1: Review the Danger in Hate like this:
This Anger can bring me to a bad destination, downfall, pain, even to hell!

2: Know the outlet is Patience, Tolerance and Forbearance:
The Blessed Buddha once said: The greatest praxis is patience...  

3: Begin and Cultivate meditation on Infinite Friendliness:
Sit down a silent & empty place with closed eyes and beam from your heart:
May I be successful, happy, calmed & freed from all hostility and anger!
May my friends be successful, happy, calmed & freed from all hostility!
May my enemies be successful, happy, calmed & freed from all hostility!
May all in this village be successful, happy, calmed & freed from hostility!
May all in this town be successful, happy, calmed & freed from
hostility!
May all in this city be successful, happy, calmed & freed from
hostility!
May all in this country be successful, happy, calmed & freed from
hostility!
May all on this earth be successful, happy, calmed & freed from
hostility!
May all in this galaxy be successful, happy, calmed & freed from
hostility!
May all in this universe be successful, happy, calmed & freed from
hostility!
Thereby gradually expanding beyond the limitations of space & into infinitude!


4: Note the elation & Joy of the mind so trained by infinite goodness as object!
Whenever aversion, anger or irritation reappears, then immediately redirect
mind to this remembered sign of the mind released into infinite good-will.
Please indeed note that the anger then instantly evaporates and an ability
to smile at one's own folly temper can begin to shine outward again. :-)

5: Training of Infinite Friendliness can induce the first jhāna absorption,
and thus can lead to a high rebirth as a divinely fine material brahma deva.

6: Keep on doing that 15-45 min every day. Note difference during the day!
May all beings be free from suffering, pain and frustration and be happy.
May all beings be free from anger, irritation, opposition & stubbornness!

The Blessed Buddha once said:
Let no one deceive another,
or despise anyone anywhere,
or through anger or irritation
wish for another to suffer...
Khuddakapatha 9

Slay anger and you will be happy,
Slay anger and you will not sorrow.
For the slaying of anger in all its forms
with its poisoned root and sweet sting,
that is the only slaying the Nobles praise;
With anger slain one sorrows no more!
Samyutta Nikāya I, 161



Not by anger is Hate ever quenched.
Only by Kindness is Hate always quenched.
This Ancient Law is an Eternal Truth ...
Dhammapada 5

Appeasing Anger!