Welcome!
I drank for all those reasons too.
I found that I am a much better mother when I am sober than I ever was drunk or hungover.
While situations with my son can be frustrating, I have learned other ways to cope. I take a positive parenting course online. Which while I was drinking I had wanted to do for months, now that I am sober, I have the time to go through the course.
I leave the situation when frustrated and cool down and then deal with whatever is going on calm, cool and collected. My son seems to be more responsive with this as well, he is 2.5.
I have yet to find a bad side-effect from being sober
While the beginning can be rough, just remember "This too shall pass".
I hope you are able to take some advice and enjoy a life of sobriety.
Find a good plan, AA and coming here often works wonders for me.
Blessings,
DC