You are doing the right thing. And it will get better.
You said yourself that your 3 years of sobriety were your best years. So I think you know that is where you need to be. You just need to learn how to address the feelings that you have been masking with alcohol.
Maybe consider counseling or therapy, or even medical treatment, if you feel that you have clinical symptoms of anxiety or depression.
But know this: Whatever methods and tools that you use to address the life problems that you experience, they will serve you much better than has alcohol.
Good luck. I hope you will keep posting and let us know how you are doing.