COVERTS- Hey man, what you are experiencing is totally normal. Many of us, including myself , felt really angry after exiting the JW's and when we started discovering the lies and deceit. Don't beat yourself up over it. In reality it shows you actually have a good conscience, it shows you recognize injustice when you see it and that you've taken responsibility within yourself in action to not support the unjust ways of the GB anymore by stopping the attending of meetings.
I stopped attending in 2003 at age 44 and I was a born in from birth. A few years later in 2007 when I found out how screwed up the GB's child abuse policies were and how some victims and their families had been disfellowshipped for reporting child abuse to the police- my head about exploded - I was so angry ! To think that the GB had given out instructions to elders to first report child abuse to WT legal , and ONLY go to the police once instructed by WT legal - to me the jig was up- the leaders of this JW organization have no moral or ethical character whatsoever. It's all about outward appearance, saving themselves huge lawsuits, and consolidating and keeping information from rank & file JW's in the congregations. And it's about consolidating power over those same JW's.
As others say here it gets better in time in how to deal with the anger. For me personally , it helped talking with other EX-JW's who had similar experiences like myself being emotionally and verbally abused by elders. Also I took up playing guitar and writing songs about injustices in religion and politics. Also - became proactive in telling anyone who wanted to listen about these injustices that are occurring inside the JW organization , it helped me get the " lead " out and let off steam. After being out 14 years I've gradually lost the cult mindset and see the world in a critical thinking fashion which has built my self esteem back up after the WT Society lead by the GB tried to steal it away from me all these years. You'll be successful my friend, just have to keep informing yourself about these things. It's good you are researching, it reconfirms that you are doing the right thing. Access to information is everything- because all we ever knew before was the WT Society's slanted view of things giving us tunnel vision. Keep on keeping on man. We're here for you, Peace out, Mr. Flipper